diff --git a/cmd/ftm/main.go b/cmd/ftm/main.go
index 0db4461..6139e5d 100644
--- a/cmd/ftm/main.go
+++ b/cmd/ftm/main.go
@@ -8,6 +8,7 @@ import (
 	"path/filepath"
 
 	"github.com/sthbryan/ftm/internal/app"
+	"github.com/sthbryan/ftm/internal/i18n"
 	"github.com/sthbryan/ftm/internal/version"
 )
 
@@ -16,7 +17,7 @@ var BuildVersion string
 func doUninstall() {
 	binaryPath, err := exec.LookPath("ftm")
 	if err != nil {
-		fmt.Println("ftm is not installed or not in PATH")
+		fmt.Println(i18n.T("uninstall_not_found"))
 		os.Exit(1)
 	}
 
@@ -25,13 +26,13 @@ func doUninstall() {
 		absPath = binaryPath
 	}
 
-	fmt.Printf("Removing %s...\n", absPath)
+	fmt.Println(i18n.TF("uninstall_removing", absPath))
 	if err := os.Remove(absPath); err != nil {
-		fmt.Fprintf(os.Stderr, "Error removing binary: %v\n", err)
+		fmt.Fprintf(os.Stderr, i18n.TF("uninstall_error", err.Error())+"\n")
 		os.Exit(1)
 	}
 
-	fmt.Println("✓ ftm has been uninstalled")
+	fmt.Println(i18n.T("uninstall_success"))
 }
 
 func main() {
@@ -45,7 +46,7 @@ func main() {
 	flag.Parse()
 
 	if *showVersion {
-		fmt.Printf("Foundry Tunnel Manager v%s\n", version.Version)
+		fmt.Println(i18n.TF("version_output", version.Version))
 		os.Exit(0)
 	}
 
@@ -75,18 +76,18 @@ func main() {
 
 	url := application.WebServer.URL()
 	fmt.Printf("🎲 Foundry Tunnel Manager v%s\n", BuildVersion)
-	fmt.Printf("🌐 Dashboard running at: %s\n", url)
+	fmt.Printf(i18n.TF("dashboard_url", url))
 
 	if *webOnly {
-		fmt.Println("\nPress Ctrl+C to stop")
+		fmt.Print(i18n.T("press_ctrl_c"))
 		application.OpenDashboard()
 		select {}
 	} else if *server {
-		fmt.Println("\nPress Ctrl+C to stop")
+		fmt.Print(i18n.T("press_ctrl_c"))
 		select {}
 	}
 
-	fmt.Printf("\nPress 'w' in the TUI to open the dashboard\n\n")
+	fmt.Print(i18n.T("tui_hint"))
 
 	if err := application.Run(); err != nil {
 		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
diff --git a/internal/app/app.go b/internal/app/app.go
index 69a087c..2df1b1a 100644
--- a/internal/app/app.go
+++ b/internal/app/app.go
@@ -8,6 +8,7 @@ import (
 	tea "github.com/charmbracelet/bubbletea"
 
 	"github.com/sthbryan/ftm/internal/config"
+	"github.com/sthbryan/ftm/internal/i18n"
 	"github.com/sthbryan/ftm/internal/notifications"
 	"github.com/sthbryan/ftm/internal/process"
 	"github.com/sthbryan/ftm/internal/providers"
@@ -18,16 +19,23 @@ type App struct {
 	Config            *config.Config
 	Manager           *process.Manager
 	WebServer         *web.Server
-	DownloadProgress   chan providers.DownloadProgress
+	DownloadProgress  chan providers.DownloadProgress
 	ExpirationMonitor *notifications.ExpirationMonitor
 }
 
 func New() (*App, error) {
+
+	if err := i18n.Load(); err != nil {
+		return nil, fmt.Errorf("failed to load translations: %w", err)
+	}
+
 	cfg, err := config.Load()
 	if err != nil {
 		return nil, fmt.Errorf("failed to load config: %w", err)
 	}
 
+	i18n.InitFromConfig(cfg)
+
 	manager := process.NewManager()
 
 	app := &App{
@@ -42,8 +50,8 @@ func New() (*App, error) {
 	notifications.SetNotificationsEnabled(cfg.NotificationsStatus == config.NotificationGranted)
 
 	expConfig := notifications.ExpirationConfig{
-		Thresholds:                 cfg.ExpirationThresholds,
-		ProviderExpirationMinutes:  cfg.ProviderExpirationMinutes,
+		Thresholds:                cfg.ExpirationThresholds,
+		ProviderExpirationMinutes: cfg.ProviderExpirationMinutes,
 	}
 	app.ExpirationMonitor = notifications.NewExpirationMonitor(expConfig, func(name string, mins int) {
 		if !app.shouldUseNativeNotifications() {
diff --git a/internal/app/form.go b/internal/app/form.go
index a6ed889..2942324 100644
--- a/internal/app/form.go
+++ b/internal/app/form.go
@@ -6,6 +6,7 @@ import (
 	tea "github.com/charmbracelet/bubbletea"
 
 	"github.com/sthbryan/ftm/internal/config"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 func (m *Model) handleFormKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
@@ -111,7 +112,7 @@ func (m *Model) handlePortInput(s string) {
 
 func (m *Model) submitForm() {
 	if m.FormValues.Name == "" || m.FormValues.Port == "" {
-		m.showMessage("Name and Port are required")
+		m.showMessage(i18n.T("validation_required_fields"))
 		return
 	}
 
@@ -139,7 +140,7 @@ func (m *Model) submitEditForm() {
 	m.App.SaveConfig()
 	m.refreshItems()
 	m.State = viewList
-	m.showMessage("Tunnel updated!")
+	m.showMessage(i18n.T("tunnel_updated"))
 }
 
 func (m *Model) submitAddForm() {
@@ -156,7 +157,7 @@ func (m *Model) submitAddForm() {
 	m.App.SaveConfig()
 	m.refreshItems()
 	m.State = viewList
-	m.showMessage("Tunnel added!")
+	m.showMessage(i18n.T("tunnel_added"))
 }
 
 func parsePort(s string) int {
diff --git a/internal/app/keyhandlers_list.go b/internal/app/keyhandlers_list.go
index 4d34a9b..1ecff68 100644
--- a/internal/app/keyhandlers_list.go
+++ b/internal/app/keyhandlers_list.go
@@ -9,6 +9,7 @@ import (
 
 	"github.com/sthbryan/ftm/internal/clipboard"
 	"github.com/sthbryan/ftm/internal/config"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 func (m *Model) handleListKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
@@ -102,7 +103,7 @@ func (m *Model) startAddForm() {
 func (m *Model) startEditForm() (tea.Model, tea.Cmd) {
 	if item, ok := m.selectedItem(); ok {
 		if item.Status.State != config.TunnelStateStopped {
-			m.showMessage("Stop tunnel first to edit")
+			m.showMessage(i18n.T("error_tunnel_running"))
 			return m, nil
 		}
 		m.State = viewEditForm
@@ -127,7 +128,7 @@ func (m *Model) handleListDelete() (tea.Model, tea.Cmd) {
 		if m.Cursor >= len(m.Items) && m.Cursor > 0 {
 			m.Cursor--
 		}
-		m.showMessage("Tunnel deleted")
+		m.showMessage(i18n.T("tunnel_deleted"))
 	}
 	return m, nil
 }
@@ -135,26 +136,26 @@ func (m *Model) handleListDelete() (tea.Model, tea.Cmd) {
 func (m *Model) copyTunnelURL(item TunnelItem) {
 	if item.Status.PublicURL != "" {
 		clipboard.Write(item.Status.PublicURL)
-		m.showMessage("Copied URL!")
+		m.showMessage(i18n.T("url_copied"))
 		return
 	}
-	m.showMessage("No URL available - start tunnel first")
+	m.showMessage(i18n.T("error_no_url"))
 }
 
 func (m *Model) openDashboard() {
 	if err := m.App.OpenDashboard(); err != nil {
-		m.showMessage("Error opening dashboard: " + err.Error())
+		m.showMessage(i18n.TF("error_dashboard", err.Error()))
 		return
 	}
-	m.showMessage("Dashboard opened in browser")
+	m.showMessage(i18n.T("dashboard_opened"))
 }
 
 func (m *Model) openConfigDir() {
 	if err := m.App.OpenConfigDir(); err != nil {
-		m.showMessage("Error opening config folder: " + err.Error())
+		m.showMessage(i18n.TF("error_config", err.Error()))
 		return
 	}
-	m.showMessage("Config folder opened")
+	m.showMessage(i18n.T("config_opened"))
 }
 
 func (m *Model) playBeep() {
diff --git a/internal/app/keyhandlers_settings.go b/internal/app/keyhandlers_settings.go
index 399693e..43d4cd2 100644
--- a/internal/app/keyhandlers_settings.go
+++ b/internal/app/keyhandlers_settings.go
@@ -6,6 +6,7 @@ import (
 
 	"github.com/sthbryan/ftm/internal/app/ui/views"
 	"github.com/sthbryan/ftm/internal/config"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 func (m *Model) handleSettingsKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
@@ -23,10 +24,22 @@ func (m *Model) handleSettingsKey(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 		}
 
 	case key.Matches(msg, m.Keys.Down):
-		if sv.Focused < 1 {
+		if sv.Focused < 2 {
 			sv.Focused++
 		}
 
+	case key.Matches(msg, m.Keys.Left):
+		if sv.Focused == 2 {
+			sv.Language = cycleLanguage(sv.Language, -1)
+			i18n.SetLanguage(sv.Language)
+		}
+
+	case key.Matches(msg, m.Keys.Right):
+		if sv.Focused == 2 {
+			sv.Language = cycleLanguage(sv.Language, 1)
+			i18n.SetLanguage(sv.Language)
+		}
+
 	case key.Matches(msg, m.Keys.Enter), key.Matches(msg, m.Keys.Toggle):
 		m.handleSettingsSelect()
 
@@ -51,13 +64,34 @@ func (m *Model) handleSettingsSelect() {
 		sv.NotificationsEnabled = !sv.NotificationsEnabled
 	case 1:
 		sv.NotificationSound = !sv.NotificationSound
+	case 2:
+
+		sv.Language = cycleLanguage(sv.Language, 1)
+		i18n.SetLanguage(sv.Language)
 	}
 }
 
+func cycleLanguage(current string, dir int) string {
+	langs := i18n.SupportedLanguages()
+	for i, lang := range langs {
+		if lang == current {
+			next := i + dir
+			if next < 0 {
+				next = len(langs) - 1
+			} else if next >= len(langs) {
+				next = 0
+			}
+			return langs[next]
+		}
+	}
+	return langs[0]
+}
+
 func (m *Model) openSettings() {
 	m.SettingsView = views.NewSettingsView()
 	m.SettingsView.NotificationsEnabled = m.App.Config.NotificationsStatus == config.NotificationGranted
 	m.SettingsView.NotificationSound = m.App.Config.NotificationSound
+	m.SettingsView.Language = i18n.GetCurrentLang()
 	m.State = viewSettings
 }
 
@@ -75,6 +109,9 @@ func (m *Model) saveSettings() {
 	}
 
 	m.App.Config.NotificationSound = sv.NotificationSound
+	m.App.Config.Language = sv.Language
+
+	i18n.SetLanguage(sv.Language)
 
 	m.App.SaveConfig()
 }
diff --git a/internal/app/model.go b/internal/app/model.go
index 59ac77e..c37da49 100644
--- a/internal/app/model.go
+++ b/internal/app/model.go
@@ -6,6 +6,7 @@ import (
 	tea "github.com/charmbracelet/bubbletea"
 
 	"github.com/sthbryan/ftm/internal/config"
+	"github.com/sthbryan/ftm/internal/i18n"
 	"github.com/sthbryan/ftm/internal/providers"
 )
 
@@ -67,7 +68,7 @@ func (m *Model) installProvider(providerType config.Provider) tea.Cmd {
 		if err != nil {
 			return statusUpdateMsg{
 				tunnelID: "",
-				status:   config.TunnelStatus{ErrorMessage: "Install failed: " + err.Error(), State: config.TunnelStateError},
+				status:   config.TunnelStatus{ErrorMessage: i18n.TF("error_install_failed", err.Error()), State: config.TunnelStateError},
 			}
 		}
 		return downloadProgressMsg{Done: true, Percent: 100}
diff --git a/internal/app/model_types.go b/internal/app/model_types.go
index fb86613..755a55f 100644
--- a/internal/app/model_types.go
+++ b/internal/app/model_types.go
@@ -11,6 +11,7 @@ import (
 
 	"github.com/sthbryan/ftm/internal/app/ui/views"
 	"github.com/sthbryan/ftm/internal/config"
+	"github.com/sthbryan/ftm/internal/i18n"
 	"github.com/sthbryan/ftm/internal/providers"
 )
 
@@ -37,6 +38,8 @@ const TwoColumnThreshold = 100
 type KeyMap struct {
 	Up       key.Binding
 	Down     key.Binding
+	Left     key.Binding
+	Right    key.Binding
 	Enter    key.Binding
 	Toggle   key.Binding
 	Logs     key.Binding
@@ -61,6 +64,14 @@ var DefaultKeys = KeyMap{
 		key.WithKeys("down", "j"),
 		key.WithHelp("↓/j", "down"),
 	),
+	Left: key.NewBinding(
+		key.WithKeys("left", "h"),
+		key.WithHelp("←/h", "prev"),
+	),
+	Right: key.NewBinding(
+		key.WithKeys("right", "l"),
+		key.WithHelp("→/l", "next"),
+	),
 	Enter: key.NewBinding(
 		key.WithKeys("enter"),
 		key.WithHelp("enter", "toggle"),
@@ -155,14 +166,18 @@ func (i TunnelItem) FilterValue() string { return i.Tunnel.Name }
 func (i TunnelItem) Title() string { return i.Tunnel.Name }
 
 func (i TunnelItem) Description() string {
-	status := "OFFLINE"
+	status := i18n.T("status_offline")
 	switch i.Status.State {
 	case config.TunnelStateStarting:
-		status = "STARTING"
+		status = i18n.T("status_starting")
 	case config.TunnelStateConnecting:
-		status = "CONNECTING"
+		status = i18n.T("status_connecting")
 	case config.TunnelStateOnline:
-		status = "ONLINE"
+		status = i18n.T("status_online")
+	case config.TunnelStateError:
+		status = i18n.T("status_error")
+	case config.TunnelStateTimeout:
+		status = i18n.T("status_timeout")
 	}
-	return fmt.Sprintf("%s | Port %d | %s", i.Tunnel.Provider, i.Tunnel.LocalPort, status)
+	return fmt.Sprintf("%s | %s %d | %s", i.Tunnel.Provider, i18n.T("port"), i.Tunnel.LocalPort, status)
 }
diff --git a/internal/app/ui/components/detail_panel.go b/internal/app/ui/components/detail_panel.go
index 75ae59b..f750862 100644
--- a/internal/app/ui/components/detail_panel.go
+++ b/internal/app/ui/components/detail_panel.go
@@ -6,6 +6,7 @@ import (
 
 	"github.com/charmbracelet/lipgloss"
 	"github.com/sthbryan/ftm/internal/app/ui"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 type DetailPanel struct {
@@ -39,23 +40,23 @@ func (d *DetailPanel) Render() string {
 	labelStyle := lipgloss.NewStyle().Foreground(ui.ThemeDefault.TextDim)
 	textStyle := lipgloss.NewStyle().Foreground(ui.ThemeDefault.Text)
 
-	b.WriteString(labelStyle.Render("Provider:"))
+	b.WriteString(labelStyle.Render(i18n.T("provider_label") + ":"))
 	b.WriteString(" ")
-	b.WriteString(textStyle.Render(d.Provider))
+	b.WriteString(textStyle.Render(i18n.ProviderText(d.Provider)))
 	b.WriteString("\n")
 
-	b.WriteString(labelStyle.Render("Local Port:"))
+	b.WriteString(labelStyle.Render(i18n.T("port_label") + ":"))
 	b.WriteString(" ")
 	b.WriteString(textStyle.Render(fmt.Sprintf(":%d", d.LocalPort)))
 	b.WriteString("\n\n")
 
-	b.WriteString(labelStyle.Render("Status:"))
+	b.WriteString(labelStyle.Render(i18n.T("status_label") + ":"))
 	b.WriteString(" ")
 	b.WriteString(textStyle.Render(StatusLabel(d.StatusState)))
 	b.WriteString("\n\n")
 
 	if d.StatusState == TunnelStateOnline && d.PublicURL != "" {
-		b.WriteString(labelStyle.Render("Public URL:"))
+		b.WriteString(labelStyle.Render(i18n.T("url_label")))
 		b.WriteString("\n")
 
 		urlBox := lipgloss.NewStyle().
@@ -70,13 +71,13 @@ func (d *DetailPanel) Render() string {
 
 		copyHint := lipgloss.NewStyle().
 			Foreground(ui.ThemeDefault.Bronze).
-			Render("Press 'c' to copy")
+			Render(i18n.T("press_c_copy"))
 		b.WriteString(copyHint)
 		b.WriteString("\n\n")
 	}
 
 	if d.ErrorMsg != "" {
-		b.WriteString(labelStyle.Render("Error:"))
+		b.WriteString(labelStyle.Render(i18n.T("error_label")))
 		b.WriteString("\n")
 
 		errorBox := lipgloss.NewStyle().
@@ -104,13 +105,13 @@ func (d *DetailPanel) actions() string {
 		Padding(0, 2)
 
 	if isActive {
-		actions = append(actions, buttonStyle.Render("[t] Stop"))
+		actions = append(actions, buttonStyle.Render("[t] "+i18n.T("stop_action")))
 	} else {
-		actions = append(actions, buttonStyle.Render("[t] Start"))
+		actions = append(actions, buttonStyle.Render("[t] "+i18n.T("start_action")))
 	}
 
-	actions = append(actions, buttonStyle.Render("[l] Logs"))
-	actions = append(actions, buttonStyle.Render("[d] Delete"))
+	actions = append(actions, buttonStyle.Render("[l] "+i18n.T("logs_action")))
+	actions = append(actions, buttonStyle.Render("[d] "+i18n.T("delete_action")))
 
 	return strings.Join(actions, "  ")
 }
diff --git a/internal/app/ui/components/help_bar.go b/internal/app/ui/components/help_bar.go
index 0945e66..fab3195 100644
--- a/internal/app/ui/components/help_bar.go
+++ b/internal/app/ui/components/help_bar.go
@@ -5,6 +5,7 @@ import (
 
 	"github.com/charmbracelet/lipgloss"
 	"github.com/sthbryan/ftm/internal/app/ui"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 type HelpBar struct{}
@@ -15,16 +16,15 @@ func NewHelpBar() *HelpBar {
 
 func (h *HelpBar) Render() string {
 	shortcuts := []string{
-		"↑/↓ navigate",
-		"Enter toggle",
-		"a add",
-		"e edit",
-		"d delete",
-		"s settings",
-		"l logs",
-		"w web",
-		"o config",
-		"q quit",
+		i18n.T("navigation_hint"),
+		"a " + i18n.T("create"),
+		"e " + i18n.T("edit"),
+		"d " + i18n.T("delete"),
+		"s " + i18n.T("settings"),
+		"l " + i18n.T("logs"),
+		"w " + i18n.T("web"),
+		"o " + i18n.T("config"),
+		"q " + i18n.T("close"),
 	}
 
 	firstLine := strings.Join(shortcuts[:5], "  •  ")
diff --git a/internal/app/ui/components/tunnel_item.go b/internal/app/ui/components/tunnel_item.go
index a6f1dd3..25bf5e9 100644
--- a/internal/app/ui/components/tunnel_item.go
+++ b/internal/app/ui/components/tunnel_item.go
@@ -6,6 +6,7 @@ import (
 
 	"github.com/charmbracelet/lipgloss"
 	"github.com/sthbryan/ftm/internal/app/ui"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 type TunnelItem struct {
@@ -35,30 +36,30 @@ const (
 func StatusBadge(state int) string {
 	switch state {
 	case TunnelStateStarting, TunnelStateConnecting:
-		return "[...]"
+		return i18n.T("badge_starting")
 	case TunnelStateOnline:
-		return "[ON]"
+		return i18n.T("badge_online")
 	case TunnelStateError, TunnelStateTimeout:
-		return "[ERR]"
+		return i18n.T("badge_error")
 	default:
-		return "[OFF]"
+		return i18n.T("badge_offline")
 	}
 }
 
 func StatusLabel(state int) string {
 	switch state {
 	case TunnelStateStarting:
-		return "STARTING"
+		return i18n.T("status_starting")
 	case TunnelStateConnecting:
-		return "CONNECTING"
+		return i18n.T("status_connecting")
 	case TunnelStateOnline:
-		return "ONLINE"
+		return i18n.T("status_online")
 	case TunnelStateError:
-		return "ERROR"
+		return i18n.T("status_error")
 	case TunnelStateStopped:
-		return "OFFLINE"
+		return i18n.T("status_offline")
 	default:
-		return "OFFLINE"
+		return i18n.T("status_offline")
 	}
 }
 
@@ -140,7 +141,7 @@ func (t *TunnelItem) statusText(bgColor lipgloss.Color) string {
 }
 
 func (t *TunnelItem) meta(bgColor lipgloss.Color) string {
-	meta := fmt.Sprintf("%s :%d", t.Provider, t.LocalPort)
+	meta := fmt.Sprintf("%s: %d", t.Provider, t.LocalPort)
 
 	return lipgloss.NewStyle().
 		Foreground(ui.ThemeDefault.TextDim).
diff --git a/internal/app/ui/views/downloading.go b/internal/app/ui/views/downloading.go
index 27e6f4e..c693f16 100644
--- a/internal/app/ui/views/downloading.go
+++ b/internal/app/ui/views/downloading.go
@@ -6,6 +6,7 @@ import (
 
 	"github.com/charmbracelet/lipgloss"
 	"github.com/sthbryan/ftm/internal/app/ui"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 type DownloadingView struct {
@@ -30,7 +31,7 @@ func (d *DownloadingView) Render(progressBarView string) string {
 	header := lipgloss.NewStyle().
 		Foreground(gold).
 		Bold(true).
-		Render("⬇️  Installing")
+		Render(i18n.T("installing"))
 
 	b.WriteString(header)
 	b.WriteString("\n\n")
@@ -43,11 +44,11 @@ func (d *DownloadingView) Render(progressBarView string) string {
 	var step string
 	switch {
 	case d.Percent < 90:
-		step = fmt.Sprintf("Downloading %s...", name)
+		step = i18n.TF("downloading", name)
 	case d.Percent < 100:
-		step = fmt.Sprintf("Installing %s...", name)
+		step = i18n.TF("installing", name)
 	default:
-		step = "Complete!"
+		step = i18n.T("complete")
 	}
 
 	stepStyle := lipgloss.NewStyle().Foreground(text)
@@ -76,7 +77,7 @@ func (d *DownloadingView) Render(progressBarView string) string {
 	b.WriteString("\n")
 	b.WriteString(lipgloss.NewStyle().
 		Foreground(textDim).
-		Render("esc: cancel"))
+		Render(i18n.T("esc_cancel")))
 
 	return b.String()
 }
diff --git a/internal/app/ui/views/empty.go b/internal/app/ui/views/empty.go
index b91579b..8dea5c2 100644
--- a/internal/app/ui/views/empty.go
+++ b/internal/app/ui/views/empty.go
@@ -6,6 +6,7 @@ import (
 
 	"github.com/charmbracelet/lipgloss"
 	"github.com/sthbryan/ftm/internal/app/ui"
+	"github.com/sthbryan/ftm/internal/i18n"
 	"github.com/sthbryan/ftm/internal/version"
 )
 
@@ -31,29 +32,29 @@ func (e *EmptyState) Render() string {
 	title := lipgloss.NewStyle().
 		Foreground(gold).
 		Bold(true).
-		Render("Welcome, Dungeon Master!")
+		Render(i18n.T("welcome_title"))
 
 	subtitle := lipgloss.NewStyle().
 		Foreground(text).
-		Render("You haven't created any tunnels yet.")
+		Render(i18n.T("no_tunnels_yet"))
 
 	desc := lipgloss.NewStyle().
 		Foreground(textDim).
-		Render("Tunnels let your players connect to your Foundry world.")
+		Render(i18n.T("tunnels_desc"))
 
 	cta := lipgloss.NewStyle().
 		Background(gold).
 		Bold(true).
 		Padding(0, 2).
-		Render("[ Create First Tunnel ]")
+		Render(i18n.T("create_first"))
 
 	hint := lipgloss.NewStyle().
 		Foreground(textDim).
-		Render("Or press 'a' to start")
+		Render(i18n.T("press_a_hint"))
 
 	tip := lipgloss.NewStyle().
 		Foreground(bronze).
-		Render("💡 Tip: Web dashboard at " + e.Dashboard + "  •  ws:" + fmt.Sprintf("%d", e.Sessions))
+		Render(i18n.T("tip_dashboard") + " " + e.Dashboard + "  •  ws:" + fmt.Sprintf("%d", e.Sessions))
 
 	contentHeight := 12
 	paddingTop := (e.Height - contentHeight) / 2
diff --git a/internal/app/ui/views/form.go b/internal/app/ui/views/form.go
index 5f2fe81..d1c9d6a 100644
--- a/internal/app/ui/views/form.go
+++ b/internal/app/ui/views/form.go
@@ -6,6 +6,7 @@ import (
 
 	"github.com/charmbracelet/lipgloss"
 	"github.com/sthbryan/ftm/internal/app/ui"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 type FormView struct {
@@ -24,15 +25,26 @@ func NewFormView() *FormView {
 func (f *FormView) Render() string {
 	t := ui.ThemeDefault
 	inputWidth := 25
-
 	labelWidth := 17
 	totalWidth := labelWidth + 2 + inputWidth
 
-	header := "✨ New Tunnel"
-	subheader := "Create a secure tunnel to your local service"
+	newTunnelText := i18n.T("new_tunnel")
+	editTunnelText := i18n.T("edit_tunnel")
+	newTunnelDesc := i18n.T("new_tunnel_desc")
+	editTunnelDesc := i18n.T("edit_tunnel_desc")
+	nameLabel := i18n.T("name_label")
+	nameHint := i18n.T("tunnel_name_hint")
+	providerLabel := i18n.T("provider_label")
+	providerHint := i18n.T("provider_hint")
+	portLabel := i18n.T("local_port")
+	portHint := i18n.T("port_hint")
+	navHint := i18n.T("form_nav_hint")
+
+	header := newTunnelText
+	subheader := newTunnelDesc
 	if f.IsEditMode {
-		header = "✏️ Edit Tunnel"
-		subheader = "Modify your tunnel settings"
+		header = editTunnelText
+		subheader = editTunnelDesc
 	}
 
 	headerStyle := lipgloss.NewStyle().
@@ -44,89 +56,49 @@ func (f *FormView) Render() string {
 		Foreground(t.TextDim).
 		Render(subheader)
 
+	if f.Focus == 0 {
+		nameLabel = "▸ " + nameLabel
+		nameHint = i18n.T("type_hint")
+	}
+	if f.Focus == 1 {
+		providerLabel = "▸ " + providerLabel
+		providerHint = i18n.T("arrow_hint")
+	}
+	if f.Focus == 2 {
+		portLabel = "▸ " + portLabel
+		portHint = i18n.T("numbers_hint")
+	}
+
 	lines := []string{
 		headerStyle,
 		"",
 		subheaderStyle,
 		"",
-		f.nameField(t, inputWidth, labelWidth),
+		f.fieldWithLabel(nameLabel, nameHint, f.Name, 0, t, inputWidth, labelWidth),
 		"",
-		f.providerField(t, inputWidth, labelWidth),
+		f.fieldWithLabel(providerLabel, providerHint, f.Provider, 1, t, inputWidth, labelWidth),
 		"",
-		f.portField(t, inputWidth, labelWidth),
+		f.fieldWithLabel(portLabel, portHint, f.Port, 2, t, inputWidth, labelWidth),
 		"",
 		f.submitButton(t, inputWidth),
 		"",
-		lipgloss.NewStyle().Foreground(t.TextDim).Render("TAB: to navigate fields\nENTER: to submit\nESC: to cancel"),
+		lipgloss.NewStyle().Foreground(t.TextDim).Render(navHint),
 	}
 
 	content := strings.Join(lines, "\n")
 	return centerBlock(content, f.Width, totalWidth)
 }
 
-func (f *FormView) nameField(t *ui.Theme, inputWidth, labelWidth int) string {
-	label := "Name"
-	hint := "your tunnel identifier"
-
-	if f.Focus == 0 {
-		label = "▸ Name"
-		hint = "type to enter"
-	}
-
-	value := f.Name
+func (f *FormView) fieldWithLabel(label, hint, value string, field int, t *ui.Theme, inputWidth, labelWidth int) string {
 	if value == "" {
 		value = "..."
 	}
-
-	labelStyle := f.labelStyle(t, 0, labelWidth)
-	inputStyle := f.inputStyle(t, 0, inputWidth)
-	hintStyle := lipgloss.NewStyle().Foreground(t.Bronze)
-
-	return fmt.Sprintf("%s\n%s\n%s",
-		labelStyle.Render(label+":"),
-		inputStyle.Render(value),
-		hintStyle.Render(hint),
-	)
-}
-
-func (f *FormView) providerField(t *ui.Theme, inputWidth, labelWidth int) string {
-	label := "Provider"
-	value := f.Provider
-	hint := "cloudflare | ngrok | local"
-
-	if f.Focus == 1 {
-		label = "▸ Provider"
+	if field == 1 && f.Focus == 1 {
 		value = "‹ " + value + " ›"
-		hint = "← → to change"
-	}
-
-	labelStyle := f.labelStyle(t, 1, labelWidth)
-	inputStyle := f.inputStyle(t, 1, inputWidth)
-	hintStyle := lipgloss.NewStyle().Foreground(t.Bronze)
-
-	return fmt.Sprintf("%s\n%s\n%s",
-		labelStyle.Render(label+":"),
-		inputStyle.Render(value),
-		hintStyle.Render(hint),
-	)
-}
-
-func (f *FormView) portField(t *ui.Theme, inputWidth, labelWidth int) string {
-	label := "Local Port"
-	value := f.Port
-	hint := "e.g. 3000, 8080"
-
-	if f.Focus == 2 {
-		label = "▸ Local Port"
-		hint = "numbers only"
-	}
-
-	if value == "" {
-		value = "..."
 	}
 
-	labelStyle := f.labelStyle(t, 2, labelWidth)
-	inputStyle := f.inputStyle(t, 2, inputWidth)
+	labelStyle := f.labelStyle(t, field, labelWidth)
+	inputStyle := f.inputStyle(t, field, inputWidth)
 	hintStyle := lipgloss.NewStyle().Foreground(t.Bronze)
 
 	return fmt.Sprintf("%s\n%s\n%s",
@@ -137,9 +109,9 @@ func (f *FormView) portField(t *ui.Theme, inputWidth, labelWidth int) string {
 }
 
 func (f *FormView) submitButton(t *ui.Theme, inputWidth int) string {
-	btnText := "Create Tunnel"
+	btnText := i18n.T("submit_new")
 	if f.IsEditMode {
-		btnText = "Save Changes"
+		btnText = i18n.T("submit_edit")
 	}
 
 	btnStyle := lipgloss.NewStyle().
diff --git a/internal/app/ui/views/list.go b/internal/app/ui/views/list.go
index b6c6b4c..c717746 100644
--- a/internal/app/ui/views/list.go
+++ b/internal/app/ui/views/list.go
@@ -7,6 +7,7 @@ import (
 	"github.com/charmbracelet/lipgloss"
 	"github.com/sthbryan/ftm/internal/app/ui"
 	"github.com/sthbryan/ftm/internal/app/ui/components"
+	"github.com/sthbryan/ftm/internal/i18n"
 	"github.com/sthbryan/ftm/internal/version"
 )
 
@@ -60,7 +61,7 @@ func (l *ListView) twoColumn() string {
 	title := lipgloss.NewStyle().
 		Foreground(gold).
 		Bold(true).
-		Render("🎲  Foundry Tunnel Manager")
+		Render(i18n.T("app_name_tui"))
 	versionStr := lipgloss.NewStyle().
 		Foreground(textDim).
 		Render("v" + version.Version + "  ws:" + fmt.Sprintf("%d", l.Sessions))
@@ -76,12 +77,12 @@ func (l *ListView) twoColumn() string {
 	leftHeader := lipgloss.NewStyle().
 		Bold(true).
 		Foreground(text).
-		Render("Your Connections")
+		Render(i18n.T("connections"))
 
 	rightHeader := lipgloss.NewStyle().
 		Bold(true).
 		Foreground(text).
-		Render("Selected Tunnel")
+		Render(i18n.T("selected_tunnel"))
 
 	b.WriteString(leftHeader)
 	b.WriteString(strings.Repeat(" ", leftWidth-lipgloss.Width(leftHeader)+3))
@@ -125,7 +126,7 @@ func (l *ListView) twoColumn() string {
 
 	if l.Message != "" {
 		msgStyle := lipgloss.NewStyle().Foreground(gold).Bold(true)
-		b.WriteString(msgStyle.Render("✓ " + l.Message))
+		b.WriteString(msgStyle.Render(i18n.T("success_prefix") + " " + l.Message))
 		b.WriteString("\n")
 	}
 
@@ -143,7 +144,7 @@ func (l *ListView) singleColumn() string {
 	title := lipgloss.NewStyle().
 		Foreground(gold).
 		Bold(true).
-		Render("🎲  Foundry Tunnel Manager")
+		Render(i18n.T("app_name_tui"))
 	versionStr := lipgloss.NewStyle().
 		Foreground(textDim).
 		Render("v" + version.Version + "  ws:" + fmt.Sprintf("%d", l.Sessions))
@@ -155,7 +156,7 @@ func (l *ListView) singleColumn() string {
 
 	if l.Dashboard != "" {
 		urlStyle := lipgloss.NewStyle().Foreground(gold)
-		b.WriteString(urlStyle.Render("🌐  Dashboard: " + l.Dashboard + " (press 'w')"))
+		b.WriteString(urlStyle.Render(i18n.T("dashboard_label") + " " + l.Dashboard + " " + i18n.T("press_w_hint")))
 		b.WriteString("\n\n")
 	}
 
@@ -164,7 +165,7 @@ func (l *ListView) singleColumn() string {
 
 	if l.Message != "" {
 		msgStyle := lipgloss.NewStyle().Foreground(gold).Bold(true)
-		b.WriteString(msgStyle.Render("✓ " + l.Message))
+		b.WriteString(msgStyle.Render(i18n.T("success_prefix") + " " + l.Message))
 		b.WriteString("\n")
 	}
 
@@ -200,7 +201,7 @@ func (l *ListView) renderDetailPanel(width int) string {
 	if l.Cursor < 0 || l.Cursor >= len(l.Items) {
 		return lipgloss.NewStyle().
 			Foreground(ui.ThemeDefault.TextDim).
-			Render("Select a tunnel to view details")
+			Render(i18n.T("select_tunnel_details"))
 	}
 
 	item := l.Items[l.Cursor]
diff --git a/internal/app/ui/views/logs.go b/internal/app/ui/views/logs.go
index 79173e3..b07394c 100644
--- a/internal/app/ui/views/logs.go
+++ b/internal/app/ui/views/logs.go
@@ -5,6 +5,7 @@ import (
 
 	"github.com/charmbracelet/lipgloss"
 	"github.com/sthbryan/ftm/internal/app/ui"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 type LogsView struct {
@@ -28,7 +29,7 @@ func (l *LogsView) Render() string {
 	header := lipgloss.NewStyle().
 		Foreground(gold).
 		Bold(true).
-		Render("📋  Tunnel Logs")
+		Render(i18n.T("tunnel_logs"))
 
 	b.WriteString(header)
 	b.WriteString("\n\n")
@@ -46,7 +47,7 @@ func (l *LogsView) Render() string {
 
 	b.WriteString(lipgloss.NewStyle().
 		Foreground(textDim).
-		Render("esc/b: back • ↑/↓: scroll"))
+		Render(i18n.T("logs_nav_hint")))
 
 	return b.String()
 }
diff --git a/internal/app/ui/views/settings.go b/internal/app/ui/views/settings.go
index a1c4a83..550fcff 100644
--- a/internal/app/ui/views/settings.go
+++ b/internal/app/ui/views/settings.go
@@ -5,18 +5,21 @@ import (
 
 	"github.com/charmbracelet/lipgloss"
 	"github.com/sthbryan/ftm/internal/app/ui"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 type SettingsView struct {
 	Width                int
 	NotificationsEnabled bool
 	NotificationSound    bool
+	Language             string
 	Focused              int
 }
 
 func NewSettingsView() *SettingsView {
 	return &SettingsView{
-		Focused: 0,
+		Focused:  0,
+		Language: i18n.GetCurrentLang(),
 	}
 }
 
@@ -27,7 +30,7 @@ func (s *SettingsView) Render() string {
 	header := lipgloss.NewStyle().
 		Foreground(t.Gold).
 		Bold(true).
-		Render("⚙ Settings")
+		Render(i18n.T("settings_title"))
 
 	b.WriteString(header)
 	b.WriteString("\n")
@@ -35,7 +38,7 @@ func (s *SettingsView) Render() string {
 	b.WriteString("\n\n")
 
 	b.WriteString(s.renderToggle(
-		"Enable Notifications",
+		i18n.T("enable_notifications"),
 		s.NotificationsEnabled,
 		s.Focused == 0,
 		t,
@@ -43,16 +46,46 @@ func (s *SettingsView) Render() string {
 	b.WriteString("\n")
 
 	b.WriteString(s.renderToggle(
-		"Sound Effects",
+		i18n.T("notification_sound"),
 		s.NotificationSound,
 		s.Focused == 1,
 		t,
 	))
+	b.WriteString("\n\n")
+
+	b.WriteString(s.renderLanguageSelector(t))
 
 	b.WriteString("\n\n")
 	b.WriteString(lipgloss.NewStyle().
 		Foreground(t.TextDim).
-		Render("↑/↓ navigate  •  space toggle  •  esc back"))
+		Render(i18n.T("settings_nav_hint")))
+
+	return b.String()
+}
+
+func (s *SettingsView) renderLanguageSelector(t *ui.Theme) string {
+	var b strings.Builder
+
+	label := i18n.T("language") + ":"
+
+	if s.Focused == 2 {
+		b.WriteString(lipgloss.NewStyle().Foreground(t.Gold).Render("▸ "))
+	} else {
+		b.WriteString("  ")
+	}
+
+	b.WriteString(label)
+	b.WriteString(" ")
+
+	for _, lang := range i18n.SupportedLanguages() {
+		langName := i18n.LanguageName(lang)
+		if lang == s.Language {
+			b.WriteString(lipgloss.NewStyle().Foreground(t.Gold).Bold(true).Render("[" + langName + "]"))
+		} else {
+			b.WriteString(lipgloss.NewStyle().Foreground(t.TextDim).Render("[" + langName + "]"))
+		}
+		b.WriteString(" ")
+	}
 
 	return b.String()
 }
diff --git a/internal/app/update.go b/internal/app/update.go
index 26a3911..1d7aef9 100644
--- a/internal/app/update.go
+++ b/internal/app/update.go
@@ -3,6 +3,7 @@ package app
 import (
 	tea "github.com/charmbracelet/bubbletea"
 
+	"github.com/sthbryan/ftm/internal/i18n"
 	"github.com/sthbryan/ftm/internal/providers"
 )
 
@@ -54,13 +55,13 @@ func (m *Model) handleDownloadProgress(msg downloadProgressMsg) (tea.Model, tea.
 			for _, item := range m.Items {
 				if ti, ok := item.(TunnelItem); ok && ti.Tunnel.ID == m.PendingTunnel.ID {
 					m.PendingTunnel = nil
-					m.showMessage("Install complete! Starting tunnel...")
+					m.showMessage(i18n.T("install_complete"))
 					return m, m.startTunnel(ti)
 				}
 			}
 			m.PendingTunnel = nil
 		}
-		m.showMessage("Download complete!")
+		m.showMessage(i18n.T("download_complete"))
 	}
 	return m, m.checkDownloadProgress()
 }
@@ -69,7 +70,7 @@ func (m *Model) handleStatusUpdate(msg statusUpdateMsg) (tea.Model, tea.Cmd) {
 	m.refreshItems()
 	if msg.status.ErrorMessage != "" {
 		m.playBeep()
-		m.showMessage("Error: " + msg.status.ErrorMessage)
+		m.showMessage(i18n.TF("error_state", msg.status.ErrorMessage))
 	}
 	return m, nil
 }
diff --git a/internal/app/view.go b/internal/app/view.go
index 15b1617..1448fa4 100644
--- a/internal/app/view.go
+++ b/internal/app/view.go
@@ -3,11 +3,12 @@ package app
 import (
 	"github.com/sthbryan/ftm/internal/app/ui/views"
 	"github.com/sthbryan/ftm/internal/config"
+	"github.com/sthbryan/ftm/internal/i18n"
 )
 
 func (m *Model) View() string {
 	if m.Width == 0 || m.Height == 0 {
-		return "Loading..."
+		return i18n.T("loading")
 	}
 
 	switch m.State {
@@ -86,17 +87,17 @@ func statusStateIndex(state config.TunnelState) int {
 func statusMsg(state config.TunnelState) string {
 	switch state {
 	case config.TunnelStateStarting:
-		return "Starting..."
+		return i18n.T("starting")
 	case config.TunnelStateConnecting:
-		return "Connecting..."
+		return i18n.T("connecting")
 	case config.TunnelStateOnline:
-		return "Online"
+		return i18n.T("online")
 	case config.TunnelStateError:
-		return "Error"
+		return i18n.T("error")
 	case config.TunnelStateTimeout:
-		return "Timeout"
+		return i18n.T("timeout")
 	default:
-		return "Offline"
+		return i18n.T("offline")
 	}
 }
 
diff --git a/internal/config/config.go b/internal/config/config.go
index d92cc9a..b97c3d5 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -20,6 +20,7 @@ type Config struct {
 	Version int            `yaml:"version"`
 	Tunnels []TunnelConfig `yaml:"tunnels"`
 	WebPort int            `yaml:"web_port,omitempty"`
+	Language string        `yaml:"language"`
 
 	NotificationsStatus string `yaml:"notifications_status"`
 	NotificationSound   bool   `yaml:"notification_sound"`
@@ -31,6 +32,7 @@ type Config struct {
 func DefaultConfig() *Config {
 	return &Config{
 		Version:              1,
+		Language:             "en",
 		Tunnels:              []TunnelConfig{},
 		NotificationsStatus:  NotificationPending,
 		NotificationSound:    true,
diff --git a/internal/i18n/embed.go b/internal/i18n/embed.go
new file mode 100644
index 0000000..f99107b
--- /dev/null
+++ b/internal/i18n/embed.go
@@ -0,0 +1,21 @@
+package i18n
+
+import (
+	"embed"
+	"os"
+)
+
+//go:embed locales/*.yaml
+var localeFS embed.FS
+
+func Load() error {
+	return LoadFromFS(localeFS, "locales")
+}
+
+func LoadExtra(lang, path string) error {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return err
+	}
+	return LoadFromYAML(lang, data)
+}
diff --git a/internal/i18n/helpers.go b/internal/i18n/helpers.go
new file mode 100644
index 0000000..80fca84
--- /dev/null
+++ b/internal/i18n/helpers.go
@@ -0,0 +1,71 @@
+package i18n
+
+var Tr = T
+
+func StatusText(state string) string {
+	switch state {
+	case "online":
+		return T("online")
+	case "offline":
+		return T("offline")
+	case "connecting":
+		return T("connecting")
+	case "error":
+		return T("error")
+	case "timeout":
+		return T("timeout")
+	case "starting":
+		return T("starting")
+	case "stopping":
+		return T("stopping")
+	default:
+		return state
+	}
+}
+
+func ProviderText(provider string) string {
+	switch provider {
+	case "pinggy":
+		return T("provider_pinggy")
+	case "serveo":
+		return T("provider_serveo")
+	case "cloudflared":
+		return T("provider_cloudflared")
+	case "tunnelmole":
+		return T("provider_tunnelmole")
+	case "localhostrun":
+		return T("provider_localhostrun")
+	default:
+		return provider
+	}
+}
+
+func NotificationText(key string, args ...string) string {
+	msg := T(key)
+
+	for i, arg := range args {
+		placeholder := "{" + string(rune('0'+i)) + "}"
+		msg = replaceAll(msg, placeholder, arg)
+	}
+	return msg
+}
+
+func replaceAll(s, old, new string) string {
+	for {
+		idx := indexOf(s, old)
+		if idx == -1 {
+			break
+		}
+		s = s[:idx] + new + s[idx+len(old):]
+	}
+	return s
+}
+
+func indexOf(s, substr string) int {
+	for i := 0; i <= len(s)-len(substr); i++ {
+		if s[i:i+len(substr)] == substr {
+			return i
+		}
+	}
+	return -1
+}
diff --git a/internal/i18n/i18n.go b/internal/i18n/i18n.go
new file mode 100644
index 0000000..a39ea43
--- /dev/null
+++ b/internal/i18n/i18n.go
@@ -0,0 +1,306 @@
+package i18n
+
+import (
+	"embed"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+
+	"github.com/sthbryan/ftm/internal/config"
+	"golang.org/x/text/language"
+	"gopkg.in/yaml.v3"
+)
+
+const (
+	LangEN = "en"
+	LangES = "es"
+)
+
+const DefaultLang = LangEN
+
+var (
+	currentLang     = DefaultLang
+	currentLangOnce sync.Once
+	langMu          sync.RWMutex
+)
+
+type TranslationStore struct {
+	mu           sync.RWMutex
+	translations map[string]map[string]string
+}
+
+var store = &TranslationStore{
+	translations: make(map[string]map[string]string),
+}
+
+func T(key string) string {
+	langMu.RLock()
+	lang := currentLang
+	langMu.RUnlock()
+	return store.T(key, lang)
+}
+
+func TF(key string, args ...interface{}) string {
+	template := T(key)
+	for i, arg := range args {
+		placeholder := fmt.Sprintf("{%d}", i)
+		template = strings.Replace(template, placeholder, fmt.Sprintf("%v", arg), 1)
+	}
+	return template
+}
+
+func TLang(lang, key string) string {
+	return store.T(key, lang)
+}
+
+func GetCurrentLang() string {
+	langMu.RLock()
+	defer langMu.RUnlock()
+	return currentLang
+}
+
+func SetLanguage(lang string) {
+	currentLangOnce.Do(func() {})
+	store.mu.Lock()
+	defer store.mu.Unlock()
+	langMu.Lock()
+	defer langMu.Unlock()
+	if _, ok := store.translations[lang]; ok {
+		currentLang = lang
+	}
+}
+
+func SetLanguageWithFallback(lang string) {
+	store.mu.RLock()
+	_, ok := store.translations[lang]
+	store.mu.RUnlock()
+
+	langMu.Lock()
+	defer langMu.Unlock()
+	if ok {
+		currentLang = lang
+	} else {
+		currentLang = DefaultLang
+	}
+}
+
+func (s *TranslationStore) T(key, lang string) string {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+
+	if translations, ok := s.translations[lang]; ok {
+		if val, ok := translations[key]; ok {
+			return val
+		}
+	}
+
+	if lang != DefaultLang {
+		if translations, ok := s.translations[DefaultLang]; ok {
+			if val, ok := translations[key]; ok {
+				return val
+			}
+		}
+	}
+
+	return key
+}
+
+func LoadTranslations(lang string, data map[string]string) {
+	store.mu.Lock()
+	defer store.mu.Unlock()
+	store.translations[lang] = data
+}
+
+func LoadFromYAML(lang string, content []byte) error {
+	store.mu.Lock()
+	defer store.mu.Unlock()
+
+	var data map[string]string
+	if err := yaml.Unmarshal(content, &data); err != nil {
+		return fmt.Errorf("failed to parse YAML for lang %s: %w", lang, err)
+	}
+
+	store.translations[lang] = data
+	return nil
+}
+
+func InitFromConfig(cfg *config.Config) {
+
+	systemLang := detectSystemLang()
+
+	if cfg.Language != "" {
+		SetLanguageWithFallback(cfg.Language)
+		return
+	}
+
+	SetLanguageWithFallback(systemLang)
+}
+
+func detectSystemLang() string {
+	lang := os.Getenv("LANG")
+	if lang == "" {
+		return DefaultLang
+	}
+
+	tag, err := language.Parse(lang)
+	if err != nil {
+		return DefaultLang
+	}
+
+	base, _ := tag.Base()
+	switch base.String() {
+	case "en":
+		return LangEN
+	case "es":
+		return LangES
+	default:
+		return DefaultLang
+	}
+}
+
+func SupportedLanguages() []string {
+	return []string{LangEN, LangES}
+}
+
+func LanguageName(code string) string {
+	switch code {
+	case LangEN:
+		return "English"
+	case LangES:
+		return "Español"
+	default:
+		return code
+	}
+}
+
+func LanguageTag(code string) string {
+	switch code {
+	case LangEN:
+		return "en-US"
+	case LangES:
+		return "es-ES"
+	default:
+		return "en-US"
+	}
+}
+
+func ParseAcceptLanguage(header string) string {
+	if header == "" {
+		return DefaultLang
+	}
+
+	parts := strings.Split(header, ",")
+	for _, part := range parts {
+		part = strings.TrimSpace(part)
+		if idx := strings.Index(part, ";"); idx != -1 {
+			part = part[:idx]
+		}
+
+		tag, err := language.Parse(part)
+		if err != nil {
+			continue
+		}
+
+		base, _ := tag.Base()
+		switch base.String() {
+		case "en":
+			return LangEN
+		case "es":
+			return LangES
+		}
+	}
+
+	return DefaultLang
+}
+
+func LoadFromFS(fs embed.FS, prefix string) error {
+	languages := SupportedLanguages()
+
+	for _, lang := range languages {
+		path := filepath.Join(prefix, lang+".yaml")
+		content, err := fs.ReadFile(path)
+		if err != nil {
+			continue
+		}
+
+		if err := LoadFromYAML(lang, content); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func AddFallback(lang string) {
+	store.mu.Lock()
+	defer store.mu.Unlock()
+
+	en, ok := store.translations[DefaultLang]
+	if !ok {
+		return
+	}
+
+	current, ok := store.translations[lang]
+	if !ok {
+		store.translations[lang] = en
+		return
+	}
+
+	for k, v := range en {
+		if _, exists := current[k]; !exists {
+			current[k] = v
+		}
+	}
+}
+
+func TranslationsMap() map[string]map[string]string {
+	store.mu.RLock()
+	defer store.mu.RUnlock()
+
+	result := make(map[string]map[string]string)
+	for lang, trans := range store.translations {
+		result[lang] = trans
+	}
+	return result
+}
+
+func GetTranslations(lang string) map[string]string {
+	store.mu.RLock()
+	defer store.mu.RUnlock()
+
+	if trans, ok := store.translations[lang]; ok {
+		return trans
+	}
+	if trans, ok := store.translations[DefaultLang]; ok {
+		return trans
+	}
+	return nil
+}
+
+func GetCurrentTranslations() map[string]string {
+	return GetTranslations(currentLang)
+}
+
+func CurrentLanguage() string {
+	langMu.RLock()
+	defer langMu.RUnlock()
+	return currentLang
+}
+
+func ChangeLanguage(lang string) {
+	store.mu.RLock()
+	_, ok := store.translations[lang]
+	store.mu.RUnlock()
+
+	if ok {
+		langMu.Lock()
+		currentLang = lang
+		langMu.Unlock()
+	}
+}
+
+func AvailableLanguages() []string {
+	return SupportedLanguages()
+}
diff --git a/internal/i18n/locales/en.yaml b/internal/i18n/locales/en.yaml
new file mode 100644
index 0000000..7136de2
--- /dev/null
+++ b/internal/i18n/locales/en.yaml
@@ -0,0 +1,256 @@
+# App
+app_name: "Foundry Tunnel Manager"
+app_description: "Manage tunnels to expose Foundry VTT"
+
+# General
+ok: "OK"
+cancel: "Cancel"
+close: "Close"
+save: "Save"
+delete: "Delete"
+edit: "Edit"
+logs: "Logs"
+create: "Create"
+start: "Start"
+stop: "Stop"
+wait: "Wait..."
+loading: "Loading..."
+restart: "Restart"
+status: "Status"
+name: "Name"
+type: "Type"
+port: "Port"
+url: "URL"
+
+# Modal
+delete_connection: "Delete Connection"
+cannot_undo: "This action cannot be undone."
+
+# Status
+online: "Online"
+offline: "Offline"
+connecting: "Connecting..."
+error: "Error"
+timeout: "Timeout"
+starting: "Starting..."
+stopping: "Stopping..."
+stopped: "Stopped"
+need_installing: "Needs Install"
+installing: "Installing {0}..."
+downloading: "Downloading {0}..."
+
+# Providers
+provider_pinggy: "Pinggy"
+provider_serveo: "Serveo"
+provider_cloudflared: "Cloudflared"
+provider_tunnelmole: "Tunnelmole"
+provider_localhostrun: "LocalhostRun"
+
+# Actions
+connect: "Connect"
+disconnect: "Disconnect"
+copy_url: "Copy URL"
+open_browser: "Open in Browser"
+live_logs: "Live logs"
+configure: "Configure"
+
+# Form labels
+tunnel_name: "Tunnel Name"
+select_provider: "Select Provider"
+local_port: "Local"
+
+# Messages
+confirm_delete: "Are you sure you want to delete \"{name}\"?"
+confirm_delete_tunnel: "Are you sure you want to delete \"{name}\"?"
+confirm_stop: "Are you sure you want to stop this tunnel?"
+copied: "Copied to clipboard"
+connection_failed: "Connection failed"
+connection_success: "Connection successful"
+tunnel_expired: "Tunnel expired"
+tunnel_expiring: "Tunnel expiring soon"
+
+# Notifications
+notification_tunnel_online: "{name} is now online"
+notification_tunnel_offline: "{name} is now offline"
+notification_tunnel_error: "{name} encountered an error"
+notification_tunnel_expiring: "{name} expires in {minutes} minutes"
+notification_tunnel_expired: "{name} has expired"
+
+# Settings
+settings: "Settings"
+language: "Language"
+theme: "Theme"
+notifications: "Notifications"
+enable_notifications: "Enable Notifications"
+notification_sound: "Notification Sound"
+expiration_warnings: "Expiration Warnings"
+
+# Help
+help: "Help"
+press_enter: "Press Enter to select"
+press_esc: "Press Esc to go back"
+press_tab: "Press Tab to switch"
+navigation_hint: "↑↓ Navigate • Enter Select • Esc Back"
+
+# Errors
+error_loading_config: "Error loading configuration"
+error_saving_config: "Error saving configuration"
+error_invalid_port: "Invalid port number"
+error_invalid_name: "Invalid tunnel name"
+error_connection_refused: "Connection refused"
+error_loading_logs: "Failed to load logs"
+tunnel_options: "Tunnel options"
+
+# Labels
+connections: "Your Connections"
+selected_tunnel: "Selected Tunnel"
+select_tunnel_details: "Select a tunnel to view details"
+provider_label: "Provider"
+port_label: "Port"
+status_label: "Status"
+status_starting: "STARTING"
+status_connecting: "CONNECTING"
+status_online: "ONLINE"
+status_error: "ERROR"
+status_offline: "OFFLINE"
+start_action: "Start"
+stop_action: "Stop"
+delete_action: "Delete"
+press_c_copy: "Press 'c' to copy"
+error_label: "Error"
+url_label: "URL"
+
+# Form
+edit_connection: "Edit Connection"
+edit_connection_desc: "Modify your tunnel settings"
+connection_name_label: "Connection Name"
+name_placeholder: "e.g. My Awesome Tunnel"
+new_tunnel: "✨ New Tunnel"
+new_tunnel_desc: "Create a secure tunnel to your local service"
+edit_tunnel: "✏️ Edit Tunnel"
+edit_tunnel_desc: "Modify your tunnel settings"
+name_label: "Name"
+tunnel_name_hint: "ex. Strahd's Castle"
+provider_hint: "cloudflare | pinggy | serveo"
+port_hint: "e.g. 3000, 8080"
+type_hint: "type to enter"
+arrow_hint: "← → to change"
+numbers_hint: "numbers only"
+submit_new: "Create Tunnel"
+submit_edit: "Save Changes"
+form_nav_hint: "TAB: navigate  •  ENTER: submit  •  ESC: cancel"
+
+# Empty states
+no_tunnels: "No tunnels configured"
+add_tunnel_prompt: "Press 'a' to add a new tunnel"
+logs_action: "Logs"
+click_to_copy: "Click to copy"
+no_logs: "No logs available"
+
+# Empty state
+welcome_title: "Welcome, Dungeon Master!"
+no_tunnels_yet: "You haven't created any tunnels yet."
+tunnels_desc: "Tunnels let your players connect to your Foundry world."
+create_first: "[ Create First Tunnel ]"
+press_a_hint: "Or press 'a' to start"
+tip_dashboard: "💡 Tip: Web dashboard at"
+
+# Settings UI
+settings_title: "⚙ Settings"
+settings_nav_hint: "↑/↓ navigate  •  space/enter toggle  •  esc back"
+
+tunnel_logs: "📋  Tunnel Logs"
+logs_nav_hint: "esc/b: back • ↑/↓: scroll"
+
+# UI elements
+play_indicator: "▶"
+success_prefix: "✓"
+dashboard_label: "🌐  Dashboard:"
+press_w_hint: "(press 'w')"
+
+# Downloading
+complete: "Complete!"
+esc_cancel: "esc: cancel"
+
+# Downloads
+download_complete: "Download complete!"
+download_failed: "Download failed!"
+download_progress: "{percent}% complete"
+
+# Web settings
+web_settings_title: "Settings"
+notifications_section: "Desktop Notifications"
+enable_notifications_web: "Enable Notifications"
+notifications_prompt: "Get notified when tunnels go online, offline, or are about to expire."
+not_now: "Not Now"
+sound_effects: "Sound Effects"
+appearance_section: "Appearance"
+current_theme: "Current theme"
+language_section: "Language"
+go_back: "Go back"
+lang_en: "English"
+lang_es: "Español"
+
+# Dropdown
+close_notification: "Close notification"
+options: "Options"
+disable: "Disable"
+enable: "Enable"
+
+# Web Home
+app_tagline: "Share your world with players everywhere"
+new_connection: "New Connection"
+select: "Select"
+create_connection: "Create Connection"
+connection_created: "Connection \"{name}\" created"
+connection_deleted: "Connection \"{name}\" deleted"
+connection_updated: "Connection \"{name}\" updated"
+connection_delete_failed: "Failed to delete connection: {error}"
+connection_update_failed: "Failed to update connection: {error}"
+connection_create_failed: "Failed to create connection: {error}"
+
+# TUI Status
+status_unknown: "Unknown"
+status_installing: "INSTALLING"
+status_stopping: "STOPPING"
+
+# TUI Badges
+badge_offline: "[OFF]"
+badge_starting: "[...]"
+badge_online: "[ON]"
+badge_error: "[ERR]"
+
+# TUI Feedback
+tunnel_added: "Tunnel added!"
+tunnel_updated: "Tunnel updated!"
+tunnel_deleted: "Tunnel deleted"
+url_copied: "Copied URL!"
+install_complete: "Install complete! Starting tunnel..."
+dashboard_opened: "Dashboard opened in browser"
+config_opened: "Config folder opened"
+
+# TUI Errors
+error_no_url: "No URL available - start tunnel first"
+error_install_failed: "Install failed: {0}"
+error_tunnel_running: "Stop tunnel first to edit"
+error_dashboard: "Error opening dashboard: {0}"
+error_config: "Error opening config folder: {0}"
+error_state: "Error: {0}"
+
+# TUI Validation
+validation_required_fields: "Name and Port are required"
+
+# TUI Elements
+app_name_tui: "🎲  Foundry Tunnel Manager"
+web: "web"
+config: "config"
+
+# CLI
+uninstall_not_found: "ftm is not installed or not in PATH"
+uninstall_removing: "Removing {0}..."
+uninstall_error: "Error removing binary: {0}"
+uninstall_success: "✓ ftm has been uninstalled"
+version_output: "Foundry Tunnel Manager v{0}"
+dashboard_url: "🌐 Dashboard running at: {0}"
+press_ctrl_c: "\nPress Ctrl+C to stop"
+tui_hint: "Press 'w' in the TUI to open the dashboard"
\ No newline at end of file
diff --git a/internal/i18n/locales/es.yaml b/internal/i18n/locales/es.yaml
new file mode 100644
index 0000000..7b9028a
--- /dev/null
+++ b/internal/i18n/locales/es.yaml
@@ -0,0 +1,256 @@
+# App
+app_name: "Foundry Tunnel Manager"
+app_description: "Gestiona túneles para exponer Foundry VTT"
+
+# General
+ok: "Aceptar"
+cancel: "Cancelar"
+close: "Cerrar"
+save: "Guardar"
+delete: "Eliminar"
+edit: "Editar"
+logs: "Logs"
+create: "Crear"
+start: "Iniciar"
+stop: "Detener"
+wait: "Espera..."
+loading: "Cargando..."
+restart: "Reiniciar"
+status: "Estado"
+name: "Nombre"
+type: "Tipo"
+port: "Puerto"
+url: "URL"
+
+# Modal
+delete_connection: "Eliminar Conexión"
+cannot_undo: "Esta acción no se puede deshacer."
+
+# Status
+online: "En línea"
+offline: "Desconectado"
+connecting: "Conectando..."
+error: "Error"
+timeout: "Tiempo agotado"
+starting: "Iniciando..."
+stopping: "Deteniendo..."
+stopped: "Detenido"
+need_installing: "Necesita instalación"
+installing: "Instalando {0}..."
+downloading: "Descargando {0}..."
+
+# Providers
+provider_pinggy: "Pinggy"
+provider_serveo: "Serveo"
+provider_cloudflared: "Cloudflared"
+provider_tunnelmole: "Tunnelmole"
+provider_localhostrun: "LocalhostRun"
+
+# Actions
+connect: "Conectar"
+disconnect: "Desconectar"
+copy_url: "Copiar URL"
+open_browser: "Abrir en navegador"
+live_logs: "Logs en vivo"
+configure: "Configurar"
+
+# Form labels
+tunnel_name: "Nombre del túnel"
+select_provider: "Seleccionar proveedor"
+local_port: "Puerto"
+
+# Messages
+confirm_delete: "¿Estás seguro de que quieres eliminar \"{name}\"?"
+confirm_delete_tunnel: "¿Estás seguro de que quieres eliminar \"{name}\"?"
+confirm_stop: "¿Estás seguro de que quieres detener este túnel?"
+copied: "Copiado al portapapeles"
+connection_failed: "Conexión fallida"
+connection_success: "Conexión exitosa"
+tunnel_expired: "Túnel expirado"
+tunnel_expiring: "Túnel por expirar"
+
+# Notifications
+notification_tunnel_online: "{name} está en línea"
+notification_tunnel_offline: "{name} está desconectado"
+notification_tunnel_error: "{name} encontró un error"
+notification_tunnel_expiring: "{name} expira en {minutes} minutos"
+notification_tunnel_expired: "{name} ha expirado"
+
+# Settings
+settings: "Configuración"
+language: "Idioma"
+theme: "Tema"
+notifications: "Notificaciones"
+enable_notifications: "Habilitar notificaciones"
+notification_sound: "Sonido de notificación"
+expiration_warnings: "Advertencias de expiración"
+
+# Help
+help: "Ayuda"
+press_enter: "Presiona Enter para seleccionar"
+press_esc: "Presiona Esc para volver"
+press_tab: "Presiona Tab para cambiar"
+navigation_hint: "↑↓ Navegar • Enter Seleccionar • Esc Volver"
+
+# Errors
+error_loading_config: "Error al cargar la configuración"
+error_saving_config: "Error al guardar la configuración"
+error_invalid_port: "Número de puerto inválido"
+error_invalid_name: "Nombre de túnel inválido"
+error_connection_refused: "Conexión rechazada"
+error_loading_logs: "Error al cargar logs"
+tunnel_options: "Opciones del túnel"
+
+# Labels
+connections: "Tus Conexiones"
+selected_tunnel: "Túnel Seleccionado"
+select_tunnel_details: "Selecciona un túnel para ver detalles"
+provider_label: "Proveedor"
+port_label: "Puerto"
+status_label: "Estado"
+status_starting: "INICIANDO"
+status_connecting: "CONECTANDO"
+status_online: "EN LÍNEA"
+status_error: "ERROR"
+status_offline: "DESCONECTADO"
+start_action: "Iniciar"
+stop_action: "Detener"
+delete_action: "Eliminar"
+press_c_copy: "Presiona 'c' para copiar"
+error_label: "Error"
+url_label: "URL"
+
+# Form
+edit_connection: "Editar Conexión"
+edit_connection_desc: "Modifica la configuración del túnel"
+connection_name_label: "Nombre de Conexión"
+name_placeholder: "ej. Mi Túnel Increíble"
+new_tunnel: "✨ Nuevo Túnel"
+new_tunnel_desc: "Crea un túnel seguro a tu servicio local"
+edit_tunnel: "✏️ Editar Túnel"
+edit_tunnel_desc: "Modifica la configuración del túnel"
+name_label: "Nombre"
+tunnel_name_hint: "ej. Las Ruinas de Undermountain"
+provider_hint: "cloudflare | pinggy | serveo"
+port_hint: "ej: 3000, 8080"
+type_hint: "escribe para entrar"
+arrow_hint: "← → para cambiar"
+numbers_hint: "solo números"
+submit_new: "Crear Túnel"
+submit_edit: "Guardar Cambios"
+form_nav_hint: "TAB: navegar  •  ENTER: enviar  •  ESC: cancelar"
+
+# Empty states
+no_tunnels: "No hay túneles configurados"
+add_tunnel_prompt: "Presiona 'a' para agregar un nuevo túnel"
+logs_action: "Logs"
+click_to_copy: "Clic para copiar"
+no_logs: "No hay logs disponibles"
+
+# Empty state
+welcome_title: "¡Bienvenido, Dungeon Master!"
+no_tunnels_yet: "Aún no has creado ningún túnel."
+tunnels_desc: "Los túneles permiten a tus jugadores conectarse a tu mundo de Foundry."
+create_first: "[ Crear Primer Túnel ]"
+press_a_hint: "O presiona 'a' para comenzar"
+tip_dashboard: "💡 Tip: Panel web en"
+
+# Settings UI
+settings_title: "⚙ Configuración"
+settings_nav_hint: "↑/↓ navegar  •  espacio/enter cambiar  •  esc volver"
+
+tunnel_logs: "📋  Logs del Túnel"
+logs_nav_hint: "esc/b: volver • ↑/↓: scroll"
+
+# UI elements
+play_indicator: "▶"
+success_prefix: "✓"
+dashboard_label: "🌐  Panel:"
+press_w_hint: "(presiona 'w')"
+
+# Downloading
+complete: "¡Completo!"
+esc_cancel: "esc: cancelar"
+
+# Downloads
+download_complete: "¡Descarga completa!"
+download_failed: "¡Descarga fallida!"
+download_progress: "{percent}% completado"
+
+# Web settings
+web_settings_title: "Configuración"
+notifications_section: "Notificaciones de Escritorio"
+enable_notifications_web: "Habilitar Notificaciones"
+notifications_prompt: "Recibe notificaciones cuando los túneles se conecten, desconecten o estén por expirar."
+not_now: "Ahora no"
+sound_effects: "Efectos de Sonido"
+appearance_section: "Apariencia"
+current_theme: "Tema actual"
+language_section: "Idioma"
+go_back: "Volver"
+lang_en: "English"
+lang_es: "Español"
+
+# Dropdown
+close_notification: "Cerrar notificación"
+options: "Opciones"
+disable: "Desactivar"
+enable: "Activar"
+
+# Web Home
+app_tagline: "Comparte tu mundo con jugadores en todas partes"
+new_connection: "Nueva Conexión"
+select: "Seleccionar"
+create_connection: "Crear Conexión"
+connection_created: "Conexión \"{name}\" creada"
+connection_deleted: "Conexión \"{name}\" eliminada"
+connection_updated: "Conexión \"{name}\" actualizada"
+connection_delete_failed: "Error al eliminar conexión: {error}"
+connection_update_failed: "Error al actualizar conexión: {error}"
+connection_create_failed: "Error al crear conexión: {error}"
+
+# TUI Status
+status_unknown: "Desconocido"
+status_installing: "INSTALANDO"
+status_stopping: "DETENIENDO"
+
+# TUI Badges
+badge_offline: "[OFF]"
+badge_starting: "[...]"
+badge_online: "[ON]"
+badge_error: "[ERR]"
+
+# TUI Feedback
+tunnel_added: "¡Túnel agregado!"
+tunnel_updated: "¡Túnel actualizado!"
+tunnel_deleted: "Túnel eliminado"
+url_copied: "¡URL copiada!"
+install_complete: "¡Instalación completa! Iniciando túnel..."
+dashboard_opened: "Dashboard abierto en el navegador"
+config_opened: "Carpeta de configuración abierta"
+
+# TUI Errors
+error_no_url: "No hay URL disponible - inicia el túnel primero"
+error_install_failed: "Instalación fallida: {0}"
+error_tunnel_running: "Detén el túnel primero para editar"
+error_dashboard: "Error al abrir dashboard: {0}"
+error_config: "Error al abrir carpeta de configuración: {0}"
+error_state: "Error: {0}"
+
+# TUI Validation
+validation_required_fields: "Nombre y Puerto son requeridos"
+
+# TUI Elements
+app_name_tui: "🎲  Foundry Tunnel Manager"
+web: "web"
+config: "configuración"
+
+# CLI
+uninstall_not_found: "ftm no está instalado o no está en PATH"
+uninstall_removing: "Removiendo {0}..."
+uninstall_error: "Error al remover binario: {0}"
+uninstall_success: "✓ ftm ha sido desinstalado"
+version_output: "Foundry Tunnel Manager v{0}"
+dashboard_url: "🌐 Dashboard ejecutándose en: {0}"
+press_ctrl_c: "\nPresiona Ctrl+C para detener"
+tui_hint: "Presiona 'w' en el TUI para abrir el dashboard"
\ No newline at end of file
diff --git a/internal/web/handlers.go b/internal/web/handlers.go
index 647470a..00e5b57 100644
--- a/internal/web/handlers.go
+++ b/internal/web/handlers.go
@@ -47,6 +47,10 @@ func (h *Handlers) Route(w http.ResponseWriter, r *http.Request) {
 		h.handleSettings(w, r)
 	case path == "/api/providers":
 		h.handleProviders(w)
+	case path == "/api/i18n":
+		h.handleI18n(w, r)
+	case path == "/api/i18n/current":
+		h.handleI18nCurrent(w, r)
 	case path == "/api/detect-port":
 		h.handleDetectPort(w)
 	case strings.HasPrefix(path, "/api/tunnels/"):
diff --git a/internal/web/handlers_settings.go b/internal/web/handlers_settings.go
index f945ea0..59d1508 100644
--- a/internal/web/handlers_settings.go
+++ b/internal/web/handlers_settings.go
@@ -5,6 +5,7 @@ import (
 	"net/http"
 
 	"github.com/sthbryan/ftm/internal/config"
+	"github.com/sthbryan/ftm/internal/i18n"
 	"github.com/sthbryan/ftm/internal/notifications"
 )
 
@@ -24,6 +25,7 @@ func (h *Handlers) handleGetSettings(w http.ResponseWriter) {
 	json.NewEncoder(w).Encode(map[string]interface{}{
 		"notifications_enabled": h.config.NotificationsStatus,
 		"notification_sound":    h.config.NotificationSound,
+		"language":              h.config.Language,
 	})
 }
 
@@ -31,6 +33,7 @@ func (h *Handlers) handlePatchSettings(w http.ResponseWriter, r *http.Request) {
 	var req struct {
 		NotificationsEnabled *string `json:"notifications_enabled,omitempty"`
 		NotificationSound    *bool   `json:"notification_sound,omitempty"`
+		Language             *string `json:"language,omitempty"`
 	}
 
 	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
@@ -46,6 +49,21 @@ func (h *Handlers) handlePatchSettings(w http.ResponseWriter, r *http.Request) {
 		h.config.NotificationSound = *req.NotificationSound
 	}
 
+	if req.Language != nil {
+		validLangs := i18n.AvailableLanguages()
+		isValid := false
+		for _, l := range validLangs {
+			if l == *req.Language {
+				isValid = true
+				break
+			}
+		}
+		if isValid {
+			h.config.Language = *req.Language
+			i18n.ChangeLanguage(*req.Language)
+		}
+	}
+
 	notifications.SetNotificationsEnabled(h.config.NotificationsStatus == config.NotificationGranted)
 	notifications.SetSoundEnabled(h.config.NotificationSound)
 	if err := h.config.Save(); err != nil {
@@ -57,5 +75,36 @@ func (h *Handlers) handlePatchSettings(w http.ResponseWriter, r *http.Request) {
 	json.NewEncoder(w).Encode(map[string]interface{}{
 		"notifications_enabled": h.config.NotificationsStatus,
 		"notification_sound":    h.config.NotificationSound,
+		"language":              h.config.Language,
+	})
+}
+
+func (h *Handlers) handleI18n(w http.ResponseWriter, r *http.Request) {
+	lang := r.URL.Query().Get("lang")
+	if lang == "" {
+		lang = i18n.CurrentLanguage()
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+
+	allTranslations := i18n.TranslationsMap()
+	currentTrans := allTranslations[lang]
+	if currentTrans == nil {
+		currentTrans = allTranslations[i18n.DefaultLang]
+		lang = i18n.DefaultLang
+	}
+
+	json.NewEncoder(w).Encode(map[string]interface{}{
+		"translations": currentTrans,
+		"current":      lang,
+		"available":     i18n.AvailableLanguages(),
+	})
+}
+
+func (h *Handlers) handleI18nCurrent(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]interface{}{
+		"translations": i18n.GetCurrentTranslations(),
+		"language":     i18n.CurrentLanguage(),
 	})
 }
diff --git a/scripts/build-web-assets.sh b/scripts/build-web-assets.sh
index b07450c..c8407ee 100755
--- a/scripts/build-web-assets.sh
+++ b/scripts/build-web-assets.sh
@@ -7,6 +7,7 @@ DESKTOP_DIST_DIR="$ROOT_DIR/desktop/frontend/dist"
 STATIC_DIR="$ROOT_DIR/internal/web/static"
 
 cd "$WEB_DIR"
+bun install --frozen-lockfile
 bun run build
 
 rm -rf "$DESKTOP_DIST_DIR"
diff --git a/web-svelte/src/lib/api/endpoints/settings.ts b/web-svelte/src/lib/api/endpoints/settings.ts
index a98fae2..7946c58 100644
--- a/web-svelte/src/lib/api/endpoints/settings.ts
+++ b/web-svelte/src/lib/api/endpoints/settings.ts
@@ -3,6 +3,7 @@ import { api } from '../client';
 export interface Settings {
   notifications_enabled: "granted" | "pending" | "rejected";
   notification_sound: boolean;
+  language: string;
 }
 
 export const settingsApi = {
diff --git a/web-svelte/src/lib/api/index.ts b/web-svelte/src/lib/api/index.ts
index 3cb66bf..3272c44 100644
--- a/web-svelte/src/lib/api/index.ts
+++ b/web-svelte/src/lib/api/index.ts
@@ -1,3 +1,4 @@
 export { api } from './client';
 export * from './types';
 export * from './endpoints';
+export type { Settings } from './endpoints/settings';
diff --git a/web-svelte/src/lib/components/ConnectionsPanel.svelte b/web-svelte/src/lib/components/ConnectionsPanel.svelte
index 21c90f4..444aa93 100644
--- a/web-svelte/src/lib/components/ConnectionsPanel.svelte
+++ b/web-svelte/src/lib/components/ConnectionsPanel.svelte
@@ -3,6 +3,7 @@
   import { animate, spring } from "motion";
   import { onMount } from "svelte";
   import { useTunnels } from "$lib/stores/tunnels.svelte";
+  import { translate } from "$lib/i18n";
   import { cn } from "$lib/utils/cn";
   import TunnelCard from "./TunnelCard.svelte";
 
@@ -10,6 +11,7 @@
     $props();
 
   const store = useTunnels();
+  let t = $derived($translate);
 
   let sectionEl: HTMLElement | undefined = $state();
   let headerEl: HTMLElement | undefined = $state();
@@ -55,7 +57,7 @@
     <h2
       class="m-0 text-[17px] font-semibold font-serif text-text-heading flex items-center gap-2"
     >
-      Your Connections
+      {t("connections")}
     </h2>
     <span
       class="rounded-full px-2.5 py-0.5 text-xs font-semibold shadow-sm text-btn-text bg-primary"
@@ -75,16 +77,16 @@
         <div
           class="h-7 w-7 animate-spin rounded-full border-2 border-border border-t-primary"
         ></div>
-        <span>Loading connections...</span>
+        <span>{t("loading")}</span>
       </div>
     {:else if store.tunnels.length === 0}
       <div class="py-10 text-center text-text-muted">
         <Radio class="mx-auto mb-3 h-12 w-12" size={48} />
         <h3 class="mb-1.5 mt-0 text-base text-text-heading">
-          No connections yet
+          {t("no_tunnels")}
         </h3>
         <p class="m-0 text-sm leading-relaxed">
-          Create your first tunnel to share your Foundry VTT world with players.
+          {t("tunnels_desc")}
         </p>
       </div>
     {:else}
@@ -105,4 +107,4 @@
       </div>
     {/if}
   </div>
-</section>
+</section>
\ No newline at end of file
diff --git a/web-svelte/src/lib/components/DeleteModal.svelte b/web-svelte/src/lib/components/DeleteModal.svelte
index ed3b4c9..c51f97f 100644
--- a/web-svelte/src/lib/components/DeleteModal.svelte
+++ b/web-svelte/src/lib/components/DeleteModal.svelte
@@ -2,6 +2,7 @@
   import { X, Trash2 } from "lucide-svelte";
   import { animate } from "motion";
   import { cn } from "$lib/utils/cn";
+  import { translate } from "$lib/i18n";
   import Button from "./Button.svelte";
 
   let {
@@ -16,6 +17,8 @@
     onCancel: () => void;
   } = $props();
 
+  let t = $derived($translate);
+
   let modalRef: HTMLDivElement | undefined = $state();
   let backdropRef: HTMLDivElement | undefined = $state();
   let isAnimatingOut = $state(false);
@@ -99,7 +102,7 @@
           id="modal-title"
           class="m-0 text-lg font-semibold text-text-heading flex items-center gap-2"
         >
-          Delete Connection
+          {t("delete_connection")}
         </h3>
         <button
           class={cn(
@@ -108,16 +111,16 @@
             "transition-all duration-150 hover:rotate-90 hover:bg-hover",
           )}
           onclick={handleCancel}
-          aria-label="Close dialog"
+          aria-label={t("close")}
         >
           <X size={18} />
         </button>
       </div>
       <div class="px-6 py-5 max-md:px-5">
         <p class="m-0 mb-2 text-text">
-          Are you sure you want to delete <strong>{name}</strong>?
+          {t("confirm_delete", { name })}
         </p>
-        <p class="m-0 text-sm text-text-muted">This action cannot be undone.</p>
+        <p class="m-0 text-sm text-text-muted">{t("cannot_undo")}</p>
       </div>
       <div
         class="flex gap-3 px-6 pb-6 max-md:flex-col-reverse max-md:gap-2 max-md:px-5 max-md:pb-5"
@@ -126,13 +129,13 @@
           variant="default"
           size="lg"
           onclick={handleCancel}
-          class="flex-1 max-md:w-full">Cancel</Button
+          class="flex-1 max-md:w-full">{t("cancel")}</Button
         >
         <Button
           variant="error"
           size="lg"
           onclick={handleConfirm}
-          class="flex-1 max-md:w-full">Delete</Button
+          class="flex-1 max-md:w-full">{t("delete")}</Button
         >
       </div>
     </div>
diff --git a/web-svelte/src/lib/components/Dropdown.svelte b/web-svelte/src/lib/components/Dropdown.svelte
index 70e972e..16ece28 100644
--- a/web-svelte/src/lib/components/Dropdown.svelte
+++ b/web-svelte/src/lib/components/Dropdown.svelte
@@ -2,6 +2,7 @@
   import { cn } from "$lib/utils/cn";
   import { ChevronDown } from "lucide-svelte";
   import { animate, spring } from "motion";
+  import { translate } from "$lib/i18n";
   import type { DropdownOption } from "$lib/types";
   import type { Snippet } from "svelte";
 
@@ -23,12 +24,14 @@
     "top-right": "bottom-full mb-1.5 right-auto left-0"
   };
 
+  let t = $derived($translate);
+
   let {
     options = [],
     onSelect,
     align = "left",
-    ariaLabel = "Options",
-    label = "Options",
+    ariaLabel = t("options"),
+    label = t("options"),
     class: className = "",
     id = "",
     children,
diff --git a/web-svelte/src/lib/components/EditConnection.svelte b/web-svelte/src/lib/components/EditConnection.svelte
index e7e80fd..dc0c164 100644
--- a/web-svelte/src/lib/components/EditConnection.svelte
+++ b/web-svelte/src/lib/components/EditConnection.svelte
@@ -5,11 +5,13 @@
   import { useProviders, detectPort } from "$lib/stores/providers.svelte";
   import { useToast } from "$lib/stores/toast.svelte";
   import { useTunnels } from "$lib/stores/tunnels.svelte";
+  import { translate } from "$lib/i18n";
   import Button from "./Button.svelte";
   import Dropdown from "./Dropdown.svelte";
   import type { DropdownOption } from "$lib/types";
 
   let { tunnelId, onCancel, onSaved } = $props();
+  let t = $derived($translate);
 
   let sectionEl: HTMLElement | undefined = $state();
   let headerEl: HTMLElement | undefined = $state();
@@ -95,10 +97,12 @@
         provider: formData.provider,
         localPort: formData.localPort,
       });
-      toast.success(`Connection "${formData.name}" updated`);
+      toast.success(t("connection_updated", { name: formData.name }));
       onSaved?.();
     } catch (err) {
-      toast.error(`Failed to update: ${(err as Error).message}`);
+      toast.error(
+        t("connection_update_failed", { error: (err as Error).message }),
+      );
     }
   }
 </script>
@@ -116,7 +120,7 @@
     <h2
       class="text-base font-semibold text-text-heading flex items-center gap-2"
     >
-      Edit Connection
+      {t("edit_connection")}
     </h2>
     <button
       type="button"
@@ -132,13 +136,13 @@
         <label
           for="edit-name"
           class="block text-xs font-medium mb-1.5 text-text-muted"
-          >Connection Name</label
+          >{t("connection_name_label")}</label
         >
         <input
           type="text"
           id="edit-name"
           bind:value={formData.name}
-          placeholder="e.g. Storm King's Thunder"
+          placeholder={t("name_placeholder")}
           required
           autocomplete="off"
           class="w-full px-3 py-2 border rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-offset-1 bg-input-bg text-text border-border focus:ring-primary transition-all duration-200"
@@ -148,7 +152,7 @@
         <div class="mb-4">
           <label
             for="edit-port"
-            class="block text-xs font-medium mb-1.5 text-text-muted">Port</label
+            class="block text-xs font-medium mb-1.5 text-text-muted">{t("port")}</label
           >
           <input
             type="number"
@@ -164,7 +168,7 @@
           <label
             for="edit-provider"
             class="block text-xs font-medium mb-1.5 text-text-muted"
-            >Provider</label
+            >{t("provider_label")}</label
           >
           <Dropdown
             id="edit-provider"
@@ -172,8 +176,8 @@
             options={providerOptions}
             onSelect={selectProvider}
             align="left"
-            ariaLabel="Select provider"
-            label={selectedProvider?.label || "Select"}
+            ariaLabel={t("select_provider")}
+            label={selectedProvider?.label || t("select")}
           />
         </div>
       </div>
@@ -183,10 +187,10 @@
           size="lg"
           type="button"
           onclick={onCancel}
-          class="flex-1">Cancel</Button
+          class="flex-1">{t("cancel")}</Button
         >
         <Button variant="primary" size="lg" type="submit" class="flex-1"
-          >Save</Button
+          >{t("save")}</Button
         >
       </div>
     </form>
diff --git a/web-svelte/src/lib/components/Header.svelte b/web-svelte/src/lib/components/Header.svelte
index 81b718f..aec9f49 100644
--- a/web-svelte/src/lib/components/Header.svelte
+++ b/web-svelte/src/lib/components/Header.svelte
@@ -1,17 +1,19 @@
 <script lang="ts">
   import { page } from '$app/stores';
   import { cn } from '$lib/utils/cn';
+  import { translate } from '$lib/i18n';
   import { Settings } from 'lucide-svelte';
 
   let isSettings = $derived($page.url.pathname === '/settings');
+  let t = $derived($translate);
 </script>
 
 <header class="flex justify-between items-center mb-6 pb-5 border-b flex-shrink-0 z-10 border-border">
   <div class="flex items-center gap-4">
-    <img src="/favicon.png" alt="Foundry Tunnel Manager" class="w-10 h-10 sm:w-12 sm:h-12 rounded-xl object-cover" />
+    <img src="/favicon.png" alt={t('app_name')} class="w-10 h-10 sm:w-12 sm:h-12 rounded-xl object-cover" />
     <div class="text">
-      <h1 class="font-serif text-2xl sm:text-3xl lg:text-4xl font-bold m-0 mb-1 tracking-tight text-text-heading">Foundry Tunnel Manager</h1>
-      <p class="text-xs sm:text-sm m-0 font-medium text-text-muted">Share your world with players everywhere</p>
+      <h1 class="font-serif text-2xl sm:text-3xl lg:text-4xl font-bold m-0 mb-1 tracking-tight text-text-heading">{t('app_name')}</h1>
+      <p class="text-xs sm:text-sm m-0 font-medium text-text-muted">{t('app_tagline')}</p>
     </div>
   </div>
   
@@ -21,8 +23,8 @@
       "p-2 rounded-lg transition-colors",
       isSettings ? "bg-primary/20 text-primary" : "hover:bg-secondary"
     )}
-    aria-label="Settings"
+    aria-label={t('settings')}
   >
     <Settings size={20} />
   </a>
-</header>
+</header>
\ No newline at end of file
diff --git a/web-svelte/src/lib/components/NewConnection.svelte b/web-svelte/src/lib/components/NewConnection.svelte
index 81d7b48..2b249a8 100644
--- a/web-svelte/src/lib/components/NewConnection.svelte
+++ b/web-svelte/src/lib/components/NewConnection.svelte
@@ -5,6 +5,7 @@
   import { useProviders, detectPort } from "$lib/stores/providers.svelte";
   import { useToast } from "$lib/stores/toast.svelte";
   import { useTunnels } from "$lib/stores/tunnels.svelte";
+  import { translate } from "$lib/i18n";
   import Button from "./Button.svelte";
   import Dropdown from "./Dropdown.svelte";
   import type { DropdownOption } from "$lib/types";
@@ -12,6 +13,7 @@
   const store = useTunnels();
   const toast = useToast();
   const providerStore = useProviders();
+  let t = $derived($translate);
 
   let sectionEl: HTMLElement | undefined = $state();
   let headerEl: HTMLElement | undefined = $state();
@@ -72,9 +74,9 @@
         provider: "cloudflared",
         localPort: detectedPort,
       };
-      toast.success(`Connection "${name}" created`);
+      toast.success(t("connection_created", { name }));
     } catch (err) {
-      toast.error(`Failed to create connection: ${(err as Error).message}`);
+      toast.error(t("connection_create_failed", { error: (err as Error).message }));
     }
   }
 </script>
@@ -85,25 +87,21 @@
   class="rounded-xl p-5 bg-card border border-border"
 >
   <div bind:this={headerEl} style="opacity: 0;" class="mb-5">
-    <h2
-      class="text-base font-semibold text-text-heading flex items-center gap-2"
-    >
-      New Connection
+    <h2 class="text-base font-semibold text-text-heading flex items-center gap-2">
+      {t("new_connection")}
     </h2>
   </div>
   <div bind:this={contentEl} style="opacity: 0;">
     <form onsubmit={handleSubmit}>
       <div class="mb-4">
-        <label
-          for="name"
-          class="block text-xs font-medium mb-1.5 text-text-muted"
-          >Connection Name</label
-        >
+        <label for="name" class="block text-xs font-medium mb-1.5 text-text-muted">
+          {t("tunnel_name")}
+        </label>
         <input
           type="text"
           id="name"
           bind:value={formData.name}
-          placeholder="e.g. Storm King's Thunder"
+          placeholder={t("tunnel_name_hint")}
           required
           autocomplete="off"
           class="w-full px-3 py-2 border rounded-lg text-sm focus:outline-none focus:ring-2 focus:ring-offset-1 bg-input-bg text-text border-border focus:ring-primary transition-all duration-200"
@@ -111,10 +109,9 @@
       </div>
       <div class="grid grid-cols-2 gap-4">
         <div class="mb-4">
-          <label
-            for="port"
-            class="block text-xs font-medium mb-1.5 text-text-muted">Port</label
-          >
+          <label for="port" class="block text-xs font-medium mb-1.5 text-text-muted">
+            {t("local_port")}
+          </label>
           <input
             type="number"
             id="port"
@@ -126,31 +123,25 @@
           />
         </div>
         <div class="mb-4">
-          <label
-            for="provider"
-            class="block text-xs font-medium mb-1.5 text-text-muted"
-            >Provider</label
-          >
+          <label for="provider" class="block text-xs font-medium mb-1.5 text-text-muted">
+            {t("select_provider")}
+          </label>
           <Dropdown
             id="provider"
             class="w-full"
             options={providerOptions}
             onSelect={selectProvider}
             align="left"
-            ariaLabel="Select provider"
-            label={selectedProvider?.label || "Select"}
+            ariaLabel={t("select_provider")}
+            label={selectedProvider?.label || t("select")}
           />
         </div>
       </div>
       <div class="mt-5">
-        <Button
-          variant="primary"
-          size="lg"
-          type="submit"
-          class="w-full"
-          icon={Plus}>Create Connection</Button
-        >
+        <Button variant="primary" size="lg" type="submit" class="w-full" icon={Plus}>
+          {t("create_connection")}
+        </Button>
       </div>
     </form>
   </div>
-</section>
+</section>
\ No newline at end of file
diff --git a/web-svelte/src/lib/components/NotificationPermission.svelte b/web-svelte/src/lib/components/NotificationPermission.svelte
index f4bdc78..9753a14 100644
--- a/web-svelte/src/lib/components/NotificationPermission.svelte
+++ b/web-svelte/src/lib/components/NotificationPermission.svelte
@@ -1,10 +1,11 @@
 <script lang="ts">
   import { useNotifications } from '$lib/stores/notification.svelte.js';
-  import { cn } from '$lib/utils/cn';
-  import { animate } from 'motion';
+  import { translate } from '$lib/i18n';
 
   const notifications = useNotifications();
 
+  let t = $derived($translate);
+
   let show = $derived(notifications.status === 'pending');
   let cardRef: HTMLDivElement | undefined = $state();
   let isAnimatingOut = $state(false);
@@ -58,8 +59,8 @@
     )}
   >
     <div class="flex flex-col gap-2">
-      <h3 class="m-0 text-[1.1rem] font-semibold text-text-heading">Enable Notifications</h3>
-      <p class="m-0 text-sm leading-relaxed text-text-muted">Get notified when tunnels go online, offline, or are about to expire.</p>
+      <h3 class="m-0 text-[1.1rem] font-semibold text-text-heading">{t('enable_notifications_title')}</h3>
+      <p class="m-0 text-sm leading-relaxed text-text-muted">{t('notifications_prompt')}</p>
       <div class="flex gap-2 mt-1">
         <button
           onclick={request}
@@ -69,7 +70,7 @@
             'bg-primary text-heading border-none'
           )}
         >
-          Enable
+          {t('enable_notifications')}
         </button>
         <button
           onclick={later}
@@ -79,7 +80,7 @@
             'bg-secondary-btn text-secondary-btn-text border border-border'
           )}
         >
-          Not Now
+          {t('not_now')}
         </button>
       </div>
     </div>
diff --git a/web-svelte/src/lib/components/SettingsToggle.svelte b/web-svelte/src/lib/components/SettingsToggle.svelte
index 58696f5..871bde4 100644
--- a/web-svelte/src/lib/components/SettingsToggle.svelte
+++ b/web-svelte/src/lib/components/SettingsToggle.svelte
@@ -1,5 +1,8 @@
 <script lang="ts">
   import { cn } from '$lib/utils/cn';
+  import { translate } from '$lib/i18n';
+
+  let t = $derived($translate);
 
   interface Props {
     checked?: boolean;
@@ -20,7 +23,7 @@
   onclick={toggle}
   {disabled}
   aria-pressed={checked}
-  aria-label={checked ? "Disable" : "Enable"}
+  aria-label={checked ? t('disable') : t('enable')}
   class={cn(
     "relative w-12 h-7 rounded-full transition-all duration-200 flex-shrink-0",
     checked ? "bg-primary" : "bg-secondary",
diff --git a/web-svelte/src/lib/components/ThemeButton.svelte b/web-svelte/src/lib/components/ThemeButton.svelte
index 92f12bb..e6617d8 100644
--- a/web-svelte/src/lib/components/ThemeButton.svelte
+++ b/web-svelte/src/lib/components/ThemeButton.svelte
@@ -13,7 +13,7 @@
 <button
   type="button"
   onclick={onclick}
-  class="group relative w-10 h-10 rounded-full transition-all duration-200 hover:scale-110 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-card"
+  class="group relative cursor-pointer w-10 h-10 rounded-full transition-all duration-200 hover:scale-110 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-offset-card"
   style={selected ? `box-shadow: 0 0 0 3px var(--color-bg), 0 0 0 5px ${color};` : ''}
   aria-label={label}
   title={label}
diff --git a/web-svelte/src/lib/components/ThemeSelector.svelte b/web-svelte/src/lib/components/ThemeSelector.svelte
index bed6a42..dc9d82c 100644
--- a/web-svelte/src/lib/components/ThemeSelector.svelte
+++ b/web-svelte/src/lib/components/ThemeSelector.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
   import ThemeButton from './ThemeButton.svelte';
   import { useTheme } from '$lib/stores/theme.svelte';
+  import { translate } from '$lib/i18n';
 
   interface ThemeGroup {
     name: string;
@@ -15,6 +16,8 @@
 
   const theme = useTheme();
 
+  let t = $derived($translate);
+
   const themeNames: Record<string, string> = {
     'dracula': 'Dracula',
     'nord': 'Nord',
@@ -76,6 +79,6 @@
   ></div>
   <div>
     <p class="font-medium text-sm">{getName(theme.current)}</p>
-    <p class="text-xs text-text-muted">Current theme</p>
+    <p class="text-xs text-text-muted">{t('current_theme')}</p>
   </div>
 </div>
diff --git a/web-svelte/src/lib/components/Toasts.svelte b/web-svelte/src/lib/components/Toasts.svelte
index 3f29d52..ac6cce3 100644
--- a/web-svelte/src/lib/components/Toasts.svelte
+++ b/web-svelte/src/lib/components/Toasts.svelte
@@ -2,6 +2,9 @@
   import { animate, spring } from "motion";
   import { toast, type ToastType } from "$lib/stores/toast.svelte";
   import { cn } from "$lib/utils/cn";
+  import { translate } from "$lib/i18n";
+
+  let t = $derived($translate);
 
   const MAX_TOASTS = 5;
   const STACK_Y = 8;
@@ -124,7 +127,7 @@
           <span class="flex-1 text-sm font-medium">{t.message}</span>
           <button
             onclick={() => close(t.id)}
-            aria-label="Close notification"
+            aria-label={t('close_notification')}
             class="w-7 h-7 rounded-md cursor-pointer text-lg flex items-center justify-center transition-colors duration-150 bg-heading/20 text-heading"
           >
             &times;
diff --git a/web-svelte/src/lib/components/TunnelCard.svelte b/web-svelte/src/lib/components/TunnelCard.svelte
index b1876b8..960adaa 100644
--- a/web-svelte/src/lib/components/TunnelCard.svelte
+++ b/web-svelte/src/lib/components/TunnelCard.svelte
@@ -12,6 +12,7 @@
     X,
   } from "lucide-svelte";
   import { logsApi } from "$lib/api";
+  import { translate } from "$lib/i18n";
   import { cn } from "$lib/utils/cn";
   import { formatLogs } from "$lib/utils/logs";
   import Button from "./Button.svelte";
@@ -25,7 +26,7 @@
 
   type StatusKey = "running" | "starting" | "installing" | "error" | "stopped";
   type StatusColors = { bg: string; text: string; dot: string };
-  type StatusInfo = { key: StatusKey; text: string };
+  type StatusInfo = { key: StatusKey; textKey: string };
   type InstallProgress = { percent: number; step: string };
 
   interface TunnelCardProps {
@@ -48,6 +49,7 @@
     installProgress = null,
   }: TunnelCardProps = $props();
 
+  let t = $derived($translate);
   const dropdownAlign = $derived(index === totalItems - 1 ? "top-left" : "left");
 
   const toast = useToast();
@@ -94,17 +96,17 @@
   };
 
   const statusMap: Record<TunnelState, StatusInfo> = {
-    online: { key: "running", text: "Online" },
-    starting: { key: "starting", text: "Starting..." },
-    connecting: { key: "starting", text: "Connecting..." },
-    installing: { key: "installing", text: "Installing..." },
-    downloading: { key: "installing", text: "Downloading..." },
-    need_installing: { key: "stopped", text: "Needs Install" },
-    stopping: { key: "starting", text: "Stopping..." },
-    stopped: { key: "stopped", text: "Stopped" },
-    offline: { key: "stopped", text: "Offline" },
-    timeout: { key: "error", text: "Timeout" },
-    error: { key: "error", text: "Error" },
+    online: { key: "running", textKey: "online" },
+    starting: { key: "starting", textKey: "starting" },
+    connecting: { key: "starting", textKey: "connecting" },
+    installing: { key: "installing", textKey: "installing" },
+    downloading: { key: "installing", textKey: "downloading" },
+    need_installing: { key: "stopped", textKey: "need_installing" },
+    stopping: { key: "starting", textKey: "stopping" },
+    stopped: { key: "stopped", textKey: "stopped" },
+    offline: { key: "stopped", textKey: "offline" },
+    timeout: { key: "error", textKey: "timeout" },
+    error: { key: "error", textKey: "error" },
   };
 
   const tunnelState = $derived(tunnel.state as TunnelState);
@@ -126,7 +128,7 @@
 
   function copyUrl(url: string) {
     navigator.clipboard.writeText(url);
-    toast.info("URL copied to clipboard");
+    toast.info(t("copied"));
   }
 
   function closeLogs() {
@@ -154,7 +156,7 @@
         loadingLogs = false;
       })
       .catch(() => {
-        logs = "Failed to load logs";
+        logs = t("error_loading_logs");
         loadingLogs = false;
       });
 
@@ -183,16 +185,18 @@
   }
 
   const dropdownOptions: DropdownOption[] = $derived([
-    { label: "Edit", action: "edit", icon: Pencil, disabled: isRunning },
-    { label: "Logs", action: "logs", icon: FileText },
+    { label: t("edit"), action: "edit", icon: Pencil, disabled: isRunning },
+    { label: t("logs"), action: "logs", icon: FileText },
     { label: "separator", action: "separator" },
-    { label: "Delete", action: "delete", icon: Trash2, danger: true },
+    { label: t("delete"), action: "delete", icon: Trash2, danger: true },
   ]);
 
   const installPercent = $derived(
     Math.trunc((installProgress?.percent ?? 0) * 100) / 100,
   );
-  const installStep = $derived(installProgress?.step ?? "Installing...");
+  const installStep = $derived(installProgress?.step ?? t("installing"));
+
+  const providerLabel = $derived(providerNames[tunnel.provider] || tunnel.provider);
 </script>
 
 <div
@@ -209,7 +213,7 @@
           {tunnel.name}
         </div>
         <div class="text-xs mb-2 sm:text-xs text-muted">
-          {providerNames[tunnel.provider] || tunnel.provider} — Port {tunnel.port}
+          {providerLabel} — {t("port")} {tunnel.port}
         </div>
         <div
           class={cn(
@@ -219,7 +223,7 @@
           )}
         >
           <span class={cn("w-1.5 h-1.5 rounded-full", statusColors.dot)}></span>
-          <span>{statusInfo.text}</span>
+          <span>{t(statusInfo.textKey)}</span>
           {#if tunnelState === "installing" && installProgress}
             <span class="font-semibold ml-1">{installPercent}%</span>
           {/if}
@@ -246,7 +250,7 @@
             onclick={() => onStop(tunnel.id)}
             disabled={isInstalling || tunnelState === "stopping"}
           >
-            {isInstalling ? "Wait..." : tunnelState === "stopping" ? "Stopping..." : "Stop"}
+            {isInstalling ? t("wait") : tunnelState === "stopping" ? t("stopping") : t("stop")}
           </Button>
         {:else}
           <Button
@@ -254,14 +258,14 @@
             icon={Play}
             onclick={() => onStart(tunnel.id)}
           >
-            Start
+            {t("start")}
           </Button>
         {/if}
         <Dropdown
           options={dropdownOptions}
           onSelect={handleDropdownAction}
           align={dropdownAlign}
-          ariaLabel="Tunnel options"
+          ariaLabel={t("tunnel_options")}
         >
           {#snippet children()}
             <Menu size={16} />
@@ -289,7 +293,7 @@
         >
         <span
           class="text-[10px] text-muted opacity-0 group-hover:opacity-100 transition-opacity duration-200"
-          >Click to copy</span
+          >{t("click_to_copy")}</span
         >
       </button>
     {/if}
@@ -315,23 +319,23 @@
     >
       <div class="overflow-hidden bg-logs-bg">
         <div class="flex items-center justify-between px-4 py-2.5 border-b border-border sm:px-3.5 sm:py-2">
-          <span class="text-[11px] font-medium text-muted">Live logs</span>
+          <span class="text-[11px] font-medium text-muted">{t("live_logs")}</span>
           <Button variant="ghost" size="sm" icon={X} onclick={closeLogs}>
-            Close
+            {t("close")}
           </Button>
         </div>
         {#if loadingLogs}
           <div
             class="flex items-center justify-center gap-3 p-6 sm:p-4 sm:gap-2.5 text-status-stopped"
           >
-            <span>Loading logs...</span>
+            <span>{t("loading")}</span>
           </div>
         {:else}
           <pre
             class="m-0 p-4 text-[12px] leading-relaxed whitespace-pre-wrap break-all max-h-[300px] overflow-auto font-mono sm:p-3.5 sm:text-[11px] sm:leading-relaxed text-logs-text">{logs ||
-              "No logs available"}</pre>
+              t("no_logs")}</pre>
         {/if}
       </div>
     </div>
   </div>
-</div>
+</div>
\ No newline at end of file
diff --git a/web-svelte/src/lib/i18n/index.ts b/web-svelte/src/lib/i18n/index.ts
new file mode 100644
index 0000000..a9fe86e
--- /dev/null
+++ b/web-svelte/src/lib/i18n/index.ts
@@ -0,0 +1,105 @@
+import { writable, derived, get } from 'svelte/store';
+
+export interface Translations {
+  [key: string]: string;
+}
+
+interface I18nState {
+  translations: Translations;
+  language: string;
+  available: string[];
+  loading: boolean;
+}
+
+function createI18nStore() {
+  const { subscribe, set, update } = writable<I18nState>({
+    translations: {},
+    language: 'en',
+    available: ['en', 'es'],
+    loading: true,
+  });
+
+  return {
+    subscribe,
+    
+    async init() {
+      try {
+        const res = await fetch('/api/i18n');
+        const data = await res.json();
+        
+        update(state => ({
+          ...state,
+          translations: data.translations || {},
+          language: data.current,
+          available: data.available,
+          loading: false,
+        }));
+      } catch (e) {
+        console.error('Failed to load i18n:', e);
+        update(state => ({ ...state, loading: false }));
+      }
+    },
+
+    async setLanguage(lang: string) {
+      try {
+        await fetch('/api/settings', {
+          method: 'PATCH',
+          headers: { 'Content-Type': 'application/json' },
+          body: JSON.stringify({ language: lang }),
+        });
+
+        const res = await fetch('/api/i18n?lang=' + lang);
+        const data = await res.json();
+        
+        update(state => ({
+          ...state,
+          translations: data.translations || {},
+          language: data.current,
+          available: data.available,
+        }));
+      } catch (e) {
+        console.error('Failed to set language:', e);
+      }
+    },
+
+    refresh() {
+      return this.init();
+    },
+  };
+}
+
+export const i18n = createI18nStore();
+
+
+export function t(key: string, params?: Record<string, string>): string {
+  const state = get(i18n);
+  let text = state.translations[key] || key;
+  
+  if (params) {
+    Object.entries(params).forEach(([k, v]) => {
+      text = text.replace(new RegExp(`\\{${k}\\}`, 'g'), v);
+    });
+  }
+  
+  return text;
+}
+
+
+export const translations = derived(i18n, $i18n => $i18n.translations);
+export const currentLanguage = derived(i18n, $i18n => $i18n.language);
+export const availableLanguages = derived(i18n, $i18n => $i18n.available);
+
+
+export const translate = derived(i18n, ($i18n) => {
+  return (key: string, params?: Record<string, string>): string => {
+    let text = $i18n.translations[key] || key;
+    
+    if (params) {
+      Object.entries(params).forEach(([k, v]) => {
+        text = text.replace(new RegExp(`\\{${k}\\}`, 'g'), v);
+      });
+    }
+    
+    return text;
+  };
+});
\ No newline at end of file
diff --git a/web-svelte/src/lib/stores/settings.svelte.ts b/web-svelte/src/lib/stores/settings.svelte.ts
index 5ea29e4..471d704 100644
--- a/web-svelte/src/lib/stores/settings.svelte.ts
+++ b/web-svelte/src/lib/stores/settings.svelte.ts
@@ -1,9 +1,11 @@
-import { settingsApi, type Settings } from '$lib/api';
+import type { Settings } from '../api';
+import { settingsApi } from '../api';
 import { useNotifications } from './notification.svelte';
 
 let settings = $state<Settings>({
   notifications_enabled: "pending",
-  notification_sound: true
+  notification_sound: true,
+  language: "en"
 });
 
 let loaded = $state(false);
diff --git a/web-svelte/src/routes/+layout.svelte b/web-svelte/src/routes/+layout.svelte
index 3a1bc3d..13675a3 100644
--- a/web-svelte/src/routes/+layout.svelte
+++ b/web-svelte/src/routes/+layout.svelte
@@ -2,13 +2,15 @@
   import { onDestroy, onMount } from "svelte";
   import Toasts from "$lib/components/Toasts.svelte";
   import { subscribeWsMessages } from "$lib/api/ws";
+  import { i18n } from "$lib/i18n";
 
   import "../styles/app.css";
 
   let unsubscribeWs: (() => void) | null = null;
 
-  onMount(() => {
+  onMount(async () => {
     unsubscribeWs = subscribeWsMessages(() => {});
+    await i18n.init();
   });
 
   onDestroy(() => {
diff --git a/web-svelte/src/routes/+page.svelte b/web-svelte/src/routes/+page.svelte
index a9b067e..bd0daa4 100644
--- a/web-svelte/src/routes/+page.svelte
+++ b/web-svelte/src/routes/+page.svelte
@@ -13,12 +13,15 @@
   import type { Tunnel } from "$lib/types";
 
   import { cn } from "$lib/utils/cn";
+  import { translate } from "$lib/i18n";
 
   const store = useTunnels();
   const toast = useToast();
   const providerStore = useProviders();
   const theme = useTheme();
 
+  let t = $derived($translate);
+
   let deleteTunnel: Tunnel | null = $state(null);
   let editingTunnelId: string | null = $state(null);
 
@@ -53,10 +56,12 @@
 
     try {
       await store.delete(id);
-      toast.success(`Connection "${name}" deleted`);
+      toast.success(t("connection_deleted", { name }));
       deleteTunnel = null;
     } catch (err) {
-      toast.error(`Failed to delete connection: ${(err as Error).message}`);
+      toast.error(
+        t("connection_delete_failed", { error: (err as Error).message }),
+      );
     }
   }
 
diff --git a/web-svelte/src/routes/settings/+page.svelte b/web-svelte/src/routes/settings/+page.svelte
index 531ae70..7134269 100644
--- a/web-svelte/src/routes/settings/+page.svelte
+++ b/web-svelte/src/routes/settings/+page.svelte
@@ -1,23 +1,39 @@
 <script lang="ts">
-  import { onMount } from 'svelte';
-  import { useSettings } from '$lib/stores/settings.svelte';
-  import { useNotifications } from '$lib/stores/notification.svelte';
-  import { useTheme } from '$lib/stores/theme.svelte';
-  import { Bell, BellOff, Volume2, VolumeX, ChevronLeft } from 'lucide-svelte';
-  import SettingsSection from '$lib/components/SettingsSection.svelte';
-  import SettingRow from '$lib/components/SettingRow.svelte';
-  import ThemeSelector from '$lib/components/ThemeSelector.svelte';
-  import { themeGroups } from '$lib/data/themes';
+  import { onMount } from "svelte";
+  import { useSettings } from "$lib/stores/settings.svelte";
+  import { useNotifications } from "$lib/stores/notification.svelte";
+  import { useTheme } from "$lib/stores/theme.svelte";
+  import {
+    i18n,
+    translate,
+    availableLanguages,
+    currentLanguage,
+  } from "$lib/i18n";
+  import {
+    Bell,
+    BellOff,
+    Volume2,
+    VolumeX,
+    ChevronLeft,
+    Globe,
+  } from "lucide-svelte";
+  import SettingsSection from "$lib/components/SettingsSection.svelte";
+  import SettingRow from "$lib/components/SettingRow.svelte";
+  import ThemeSelector from "$lib/components/ThemeSelector.svelte";
+  import { themeGroups } from "$lib/data/themes";
+  import clsx from "clsx";
 
   const settingsStore = useSettings();
   const notifications = useNotifications();
   const theme = useTheme();
 
   let saving = $state(false);
+  let t = $derived($translate);
 
-  onMount(() => {
+  onMount(async () => {
     theme.init();
     settingsStore.load();
+    await i18n.init();
   });
 
   async function toggleNotifications() {
@@ -38,7 +54,19 @@
   async function toggleSound() {
     saving = true;
     try {
-      await settingsStore.update({ notification_sound: !settingsStore.settings.notification_sound });
+      await settingsStore.update({
+        notification_sound: !settingsStore.settings.notification_sound,
+      });
+    } finally {
+      saving = false;
+    }
+  }
+
+  async function changeLanguage(lang: string) {
+    saving = true;
+    try {
+      await i18n.setLanguage(lang);
+      await settingsStore.update({ language: lang });
     } finally {
       saving = false;
     }
@@ -47,29 +75,38 @@
 
 <div class="max-w-4xl mx-auto py-8">
   <div class="flex items-center gap-4 mb-8">
-    <a href="/" class="p-2 rounded-lg hover:bg-secondary transition-colors" aria-label="Go back">
+    <a
+      href="/"
+      class="p-2 rounded-lg hover:bg-secondary transition-colors"
+      aria-label={t('go_back')}
+    >
       <ChevronLeft size={20} />
     </a>
-    <h1 class="text-2xl font-semibold">Settings</h1>
+    <h1 class="text-2xl font-semibold">{t("web_settings_title")}</h1>
     {#if saving}
-      <div class="w-4 h-4 border-2 border-primary border-t-transparent rounded-full animate-spin ml-auto"></div>
+      <div
+        class="w-4 h-4 border-2 border-primary border-t-transparent rounded-full animate-spin ml-auto"
+      ></div>
     {/if}
   </div>
 
-  {#if !settingsStore.loaded}
+  {#if !settingsStore.loaded || $i18n.loading}
     <div class="flex justify-center py-12">
-      <div class="w-8 h-8 border-2 border-primary border-t-transparent rounded-full animate-spin"></div>
+      <div
+        class="w-8 h-8 border-2 border-primary border-t-transparent rounded-full animate-spin"
+      ></div>
     </div>
   {:else}
     <div class="grid grid-cols-1 lg:grid-cols-2 gap-8">
-      <SettingsSection title="Notifications">
+      <SettingsSection title={t("notifications_section")}>
         {#snippet children()}
           <div class="space-y-3">
             <SettingRow
               icon={BellOff}
               iconActive={Bell}
-              active={settingsStore.settings.notifications_enabled === "granted"}
-              label="Enable Notifications"
+              active={settingsStore.settings.notifications_enabled ===
+                "granted"}
+              label={t("enable_notifications_web")}
               disabled={saving}
               onchange={toggleNotifications}
             />
@@ -77,7 +114,7 @@
               icon={VolumeX}
               iconActive={Volume2}
               active={settingsStore.settings.notification_sound}
-              label="Sound Effects"
+              label={t("sound_effects")}
               disabled={saving}
               onchange={toggleSound}
             />
@@ -85,11 +122,35 @@
         {/snippet}
       </SettingsSection>
 
-      <SettingsSection title="Appearance">
+      <SettingsSection title={t("appearance_section")}>
         {#snippet children()}
           <ThemeSelector groups={themeGroups} />
         {/snippet}
       </SettingsSection>
+
+      <SettingsSection title={t("language_section")}>
+        {#snippet children()}
+          <div class="flex gap-2">
+            {#each $availableLanguages as lang}
+              <button
+                class={clsx(
+                  "px-4 py-2 rounded-lg border transition-colors cursor-pointer",
+                  $currentLanguage === lang
+                    ? "border-primary bg-primary/10 text-primary"
+                    : "border-border hover:border-primary/50",
+                )}
+                onclick={() => changeLanguage(lang)}
+                disabled={saving}
+              >
+                <span class="flex items-center gap-2">
+                  <Globe size={16} />
+                  {t(`lang_${lang}`)}
+                </span>
+              </button>
+            {/each}
+          </div>
+        {/snippet}
+      </SettingsSection>
     </div>
   {/if}
 </div>