diff --git a/cli/cli.test.ts b/cli/cli.test.ts
index cac7498a..d340d921 100644
--- a/cli/cli.test.ts
+++ b/cli/cli.test.ts
@@ -6,6 +6,7 @@ import * as os from 'node:os'
 import * as path from 'node:path'
 import {expect} from 'vitest'
 
+import {loadConfig, normalizeConfig} from '../lang/config.ts'
 import {isServerRunning, stopGrapheneIfRunning} from './background.ts'
 
 interface RunResult {
@@ -56,6 +57,11 @@ async function createTelemetryProject(prefix: string) {
 }
 
 describe('cli package', () => {
+  it('derives the project name from package.json with a directory fallback', async () => {
+    expect((await loadConfig(flightDir, () => {})).projectName).toBe('example-flights')
+    expect(normalizeConfig({root: '/tmp/project-without-package'}).projectName).toBe('project-without-package')
+  })
+
   it('directly includes every lang and ui runtime dependency with the exact same spec', async () => {
     let cli = JSON.parse(await fsp.readFile(path.resolve(dir, '../cli/package.json'), 'utf8'))
     let lang = JSON.parse(await fsp.readFile(path.resolve(dir, '../lang/package.json'), 'utf8'))
diff --git a/cli/serve2.ts b/cli/serve2.ts
index dc573bd5..91303122 100644
--- a/cli/serve2.ts
+++ b/cli/serve2.ts
@@ -295,7 +295,10 @@ function updateWorkspacePlugin(telemetry?: CliTelemetry) {
         }
       }
 
-      return `export default ${JSON.stringify(res)}`
+      return `
+        export const projectName = ${JSON.stringify(config.projectName)};
+        export default ${JSON.stringify(res)}
+      `
     },
     configureServer: (s: ViteDevServer) => {
       let refresh = async () => {
diff --git a/cli/telemetry.test.ts b/cli/telemetry.test.ts
index fb809826..ca8f17c4 100644
--- a/cli/telemetry.test.ts
+++ b/cli/telemetry.test.ts
@@ -50,10 +50,10 @@ describe('cli telemetry', () => {
     let env = process.env.GRAPHENE_TELEMETRY_DISABLED
     try {
       delete process.env.GRAPHENE_TELEMETRY_DISABLED
-      expect(isTelemetryEnabled({dialect: 'duckdb', envFile: ['.env'], ignoredFiles: [], root: '/tmp'}, 'https://example.com')).toBe(true)
-      expect(isTelemetryEnabled({dialect: 'duckdb', envFile: ['.env'], ignoredFiles: [], root: '/tmp', telemetry: false}, 'https://example.com')).toBe(false)
+      expect(isTelemetryEnabled({dialect: 'duckdb', envFile: ['.env'], ignoredFiles: [], root: '/tmp', projectName: 'tmp'}, 'https://example.com')).toBe(true)
+      expect(isTelemetryEnabled({dialect: 'duckdb', envFile: ['.env'], ignoredFiles: [], root: '/tmp', projectName: 'tmp', telemetry: false}, 'https://example.com')).toBe(false)
       process.env.GRAPHENE_TELEMETRY_DISABLED = '1'
-      expect(isTelemetryEnabled({dialect: 'duckdb', envFile: ['.env'], ignoredFiles: [], root: '/tmp'}, 'https://example.com')).toBe(false)
+      expect(isTelemetryEnabled({dialect: 'duckdb', envFile: ['.env'], ignoredFiles: [], root: '/tmp', projectName: 'tmp'}, 'https://example.com')).toBe(false)
     } finally {
       if (env === undefined) delete process.env.GRAPHENE_TELEMETRY_DISABLED
       else process.env.GRAPHENE_TELEMETRY_DISABLED = env
diff --git a/cli/updateNotifier.test.ts b/cli/updateNotifier.test.ts
index 1c4cdeae..43bb34a2 100644
--- a/cli/updateNotifier.test.ts
+++ b/cli/updateNotifier.test.ts
@@ -8,7 +8,7 @@ import type {Config} from '../lang/config.ts'
 import {checkForUpdate, detectPackageManager, getUpgradeCommand, isNewerVersion, isUpdateNotifierEnabled, showCachedUpdateNotice} from './updateNotifier.ts'
 
 function testConfig(root: string, overrides: Partial<Config> = {}): Config {
-  return {dialect: 'duckdb', envFile: ['.env'], ignoredFiles: [], root, ...overrides}
+  return {dialect: 'duckdb', envFile: ['.env'], ignoredFiles: [], root, ...overrides, projectName: overrides.projectName || path.basename(root)}
 }
 
 function testStderr() {
diff --git a/lang/config.ts b/lang/config.ts
index f9bfbfa3..dba8d729 100644
--- a/lang/config.ts
+++ b/lang/config.ts
@@ -4,6 +4,7 @@ import path from 'path'
 
 export interface Config {
   root: string
+  projectName: string
   dialect: string
   defaultNamespace?: string
   ignoredFiles: string[]
@@ -69,7 +70,7 @@ export interface Config {
   }
 }
 
-export type ConfigInput = Omit<Config, 'root' | 'dialect' | 'ignoredFiles' | 'envFile'> & {
+export type ConfigInput = Omit<Config, 'root' | 'projectName' | 'dialect' | 'ignoredFiles' | 'envFile'> & {
   root?: string
   dialect?: Config['dialect']
   ignoredFiles?: Config['ignoredFiles']
@@ -79,13 +80,15 @@ export type ConfigInput = Omit<Config, 'root' | 'dialect' | 'ignoredFiles' | 'en
 
 export let config: Config = {dialect: 'duckdb', root: ''} as Config
 
-export function setGlobalConfig(cfg: ConfigInput) {
+export function setGlobalConfig(cfg: ConfigInput | Config, projectName?: string) {
   Object.keys(config).forEach(key => delete config[key])
-  Object.assign(config, normalizeConfig(cfg))
+  if ('projectName' in cfg) projectName ||= cfg.projectName
+  Object.assign(config, normalizeConfig(cfg, process.cwd(), projectName))
 }
 
-export function normalizeConfig(input: ConfigInput, defaultRoot = process.cwd()): Config {
+export function normalizeConfig(input: ConfigInput, defaultRoot = process.cwd(), projectName?: string): Config {
   let cfg = {...input}
+  let root = path.resolve(cfg.root || defaultRoot)
   if (cfg.namespace && !cfg.defaultNamespace) cfg.defaultNamespace = cfg.namespace
 
   let dialect = cfg.dialect || 'duckdb'
@@ -103,7 +106,8 @@ export function normalizeConfig(input: ConfigInput, defaultRoot = process.cwd())
   return {
     ...cfg,
     dialect,
-    root: path.resolve(cfg.root || defaultRoot),
+    root,
+    projectName: projectName || path.basename(root),
     port: cfg.port || Number(process.env.GRAPHENE_PORT) || 4000,
     ignoredFiles: cfg.ignoredFiles || [],
     envFile,
@@ -121,7 +125,8 @@ export async function loadConfig(dir: string, envLoader: (envFiles: string[]) =>
   }
 
   let txt = await readFile(path.join(configDir, 'package.json'), 'utf8')
-  let graphene = JSON.parse(txt).graphene
+  let pkgJson = JSON.parse(txt)
+  let graphene = pkgJson.graphene
   if (!graphene || typeof graphene != 'object' || Array.isArray(graphene)) {
     throw new Error(`No graphene config found in ${path.join(configDir, 'package.json')}`)
   }
@@ -130,6 +135,6 @@ export async function loadConfig(dir: string, envLoader: (envFiles: string[]) =>
   let envFiles = Array.isArray(graphene.envFile) ? graphene.envFile : [graphene.envFile || '.env']
   envLoader(envFiles.map(file => path.resolve(configDir, file)))
 
-  let cfg = normalizeConfig({...graphene, root: configDir}, configDir)
+  let cfg = normalizeConfig({...graphene, root: configDir}, configDir, pkgJson.name)
   return cfg
 }
diff --git a/ui/internal/LocalApp.svelte b/ui/internal/LocalApp.svelte
index 64d1fd47..c3dd760f 100644
--- a/ui/internal/LocalApp.svelte
+++ b/ui/internal/LocalApp.svelte
@@ -1,7 +1,7 @@
 <script lang="ts">
   import {onMount, tick} from 'svelte'
   import {setErrorFor} from './telemetry.ts'
-  import navFiles from 'virtual:nav'
+  import navFiles, {projectName} from 'virtual:nav'
   import Sidebar from './Sidebar.svelte'
   import SidebarToggle from './SidebarToggle.svelte'
   import PageNavGroup from './PageNavGroup.svelte'
@@ -11,6 +11,7 @@
   import StyleGallery from './StyleGallery.svelte'
   import QueryCacheStatus from './QueryCacheStatus.svelte'
   import {type GrapheneError} from '../../lang/index.js'
+  import {prettyPrintFilename} from './utils.ts'
 
   // Nav sidebar with HMR support for the virtual file list.
   let navData = $state(navFiles)
@@ -47,6 +48,12 @@
   let Page = $state<any>(null)
   let pageMeta = $state<any>({})
   let blankForTests = $state(pathName == '__ct')
+  let fileName = pathName.split('/').at(-1) + '.md'
+  let pageTitle = $derived(pageMeta.title || prettyPrintFilename(fileName))
+
+  $effect(() => {
+    document.title = `${pageTitle} - ${projectName}`
+  })
 
   onMount(async () => {
     try {
diff --git a/ui/internal/PageNavGroup.svelte b/ui/internal/PageNavGroup.svelte
index 5e3e4fc1..7b08a2e3 100644
--- a/ui/internal/PageNavGroup.svelte
+++ b/ui/internal/PageNavGroup.svelte
@@ -4,6 +4,7 @@
   import FileChartColumnIncreasing from '@lucide/svelte/icons/file-chart-column-increasing'
   import {SvelteSet, SvelteMap} from 'svelte/reactivity'
   import {route} from './router.ts'
+  import {prettyPrintFilename} from './utils.ts'
 
   let {files = [], onNavigate = undefined, baseRoute = '', projectName = ''} = $props()
 
@@ -56,7 +57,7 @@
       for (let segment of segments) {
         parentPath = parentPath ? `${parentPath}/${segment}` : segment
         if (!folderMap.has(parentPath)) {
-          let folderNode = {type: 'folder', name: segment, label: formatLabel(segment, 'folder'), path: parentPath, children: []}
+          let folderNode = {type: 'folder', name: segment, label: prettyPrintFilename(segment), path: parentPath, children: []}
           folderMap.set(parentPath, folderNode)
           parentChildren.push(folderNode)
         }
@@ -72,7 +73,7 @@
       parentChildren.push({
         type: 'file',
         name: fileName,
-        label: formatLabel(fileName, 'file', titleLookup[fullPath]),
+        label: prettyPrintFilename(fileName, titleLookup[fullPath]),
         path: fullPath,
         route: pathToRoute(fullPath),
       })
@@ -107,14 +108,6 @@
     return next
   }
 
-  function formatLabel(value, type, explicitTitle = undefined) {
-    if (explicitTitle) return explicitTitle
-    let cleaned = type === 'file' ? value.replace(/\.md$/, '') : value
-    if (cleaned.toLowerCase() === 'index') return 'Home'
-    return cleaned.split(/[\s_-]+/).filter(Boolean)
-      .map(c => c.charAt(0).toUpperCase() + c.slice(1)).join(' ')
-  }
-
   function pathToRoute(path) {
     // A nested index.md resolves to its folder's route (path/to/folder/index.md → /path/to/folder).
     let clean = path.replace(/\.md$/, '').replace(/\/index$/, '')
diff --git a/ui/internal/utils.ts b/ui/internal/utils.ts
new file mode 100644
index 00000000..101bef66
--- /dev/null
+++ b/ui/internal/utils.ts
@@ -0,0 +1,11 @@
+// Format filenames consistently for navigation and browser titles.
+export function prettyPrintFilename(filename: string, explicitTitle?: string) {
+  if (explicitTitle) return explicitTitle
+  let cleaned = filename.replace(/\.md$/, '')
+  if (cleaned.toLowerCase() === 'index') return 'Home'
+  return cleaned
+    .split(/[\s_-]+/)
+    .filter(Boolean)
+    .map(component => component.charAt(0).toUpperCase() + component.slice(1))
+    .join(' ')
+}
diff --git a/ui/tests/fixtures.ts b/ui/tests/fixtures.ts
index 869bd901..0dd757c5 100644
--- a/ui/tests/fixtures.ts
+++ b/ui/tests/fixtures.ts
@@ -97,7 +97,7 @@ export const test = base.extend<{browser: Browser; page: Page; sharedPage: Page;
       let port = await getAvailablePort()
       let viteRoot = path.join(fileURLToPath(import.meta.url), '../../../examples/flights')
       process.env.GRAPHENE_PORT = String(port)
-      setGlobalConfig({port, root: viteRoot})
+      setGlobalConfig({port, root: viteRoot}, 'example-flights')
       let server = await serve2()
 
       function cleanup() {
@@ -118,7 +118,7 @@ export const test = base.extend<{browser: Browser; page: Page; sharedPage: Page;
 
       await use({
         url: (options: Partial<Config> = {}) => {
-          setGlobalConfig({...options, root: options.root || viteRoot, port} as any)
+          setGlobalConfig({...options, root: options.root || viteRoot, port} as any, options.projectName || 'example-flights')
           onTestFinished(cleanup)
           return `http://localhost:${port}`
         },
@@ -221,7 +221,7 @@ export const test = base.extend<{browser: Browser; page: Page; sharedPage: Page;
 
 test.beforeEach(() => {
   let root = path.join(fileURLToPath(import.meta.url), '../../../examples/flights')
-  setGlobalConfig({root})
+  setGlobalConfig({root}, 'example-flights')
   clearSvelteWarnings()
 })
 
diff --git a/ui/tests/globalSetup.ts b/ui/tests/globalSetup.ts
index 72936d12..974ace0e 100644
--- a/ui/tests/globalSetup.ts
+++ b/ui/tests/globalSetup.ts
@@ -8,7 +8,7 @@ import {setGlobalConfig} from '../../lang/config.ts'
 
 export default async function setup(project: TestProject) {
   let viteRoot = path.join(fileURLToPath(import.meta.url), '../../../examples/flights')
-  setGlobalConfig({root: viteRoot})
+  setGlobalConfig({root: viteRoot}, 'example-flights')
 
   await fs.rm(path.join(import.meta.dirname, 'results'), {force: true, recursive: true})
 
diff --git a/ui/tests/markdown.test.ts b/ui/tests/markdown.test.ts
index 932f722c..6677aa28 100644
--- a/ui/tests/markdown.test.ts
+++ b/ui/tests/markdown.test.ts
@@ -21,6 +21,7 @@ test('loads markdown files', async ({server, page}) => {
   server.mockFile('delays.md', '---\ntitle: Delay Deep-Dive\n---\n# Delays')
 
   await page.goto(server.url() + '/')
+  await expect(page).toHaveTitle('Flight Delay Analysis - example-flights')
   await expect(page.getByRole('heading', {level: 1, name: 'Flight Delay Analysis'})).toBeVisible()
   let nav = page.getByRole('navigation')
   await expect(nav).toBeVisible()
@@ -77,6 +78,7 @@ test('flights simple stacked bar renders', async ({server, page}) => {
 
   await page.goto(server.url() + '/')
   await waitForGrapheneLoad(page)
+  await expect(page).toHaveTitle('Home - example-flights')
   await expect(page).screenshot('flights-simple-stacked-bar')
 })