Verdant's evil sister.
Real-time damage analytics for The Elder Scrolls Online
Vermilion is the crimson twin of Verdant, the healer's addon. The spirit is the same — where Verdant counts the life you give back, Vermilion counts the life you take away, and shows it to you while the fight is still hot.
- Philosophy — what Vermilion is and isn't
- Installation
- The Graph Window — recording, the three views
- Skill Colors & Unknown Contributions
- Settings
- Usage — commands and keybinds
- Core Metrics — eDPS, ShDPS, EOS
- Known Limitations
- License
One rule: see your damage as it happens.
- Live, not a post-fight report. A moving trend you read while you fight. Not a log you open afterward.
- No dependencies. No libraries, no companion add-ons. One folder, drop it in, done.
- Download the latest release from ESOUI or GitHub.
- Drop the
Vermilionfolder into your AddOns directory:Documents/Elder Scrolls Online/live/AddOns/Vermilion/ - Reload with
/reloaduior restart the game. - The floating logo appears — click it to open the window, or bind a key.
Vermilion stores settings and data per server — your EU, NA and PTS profiles stay separate.
One window, a live DPS readout in the header, and three views. It's movable, resizable, and remembers its place per account.
Controls:
| Button | Action |
|---|---|
| Record | Begin capturing samples |
| Stop | Stop recording (existing samples stay visible) |
| Flush | Stop recording and clear the session |
| ‹‹ view › | Cycle between the three views |
SKILL — your damage stacked and colored by source: class lines, weapons, guilds, status effects, item procs. It shows which part of your build is doing the work.
CRIT — your landed damage split into its non-critical base 
OUTCOME — your output split into two stacked bars:
eDPS — landing on the target's health
ShDPS — absorbed by the target's damage shields
Against shield-stacking targets you can see how much of your damage is being eaten versus actually dropping health.
In the SKILL view, every segment is colored by the class, weapon, guild, or skill line the ability belongs to, so you can see which source carries your damage.
A few hits — typically item-set procs and enchant glyphs with generic icons — can't be matched to a skill line and show up grey. To color them yourself: open Settings → Unknown Contributions, pick a category for each, and it applies live (no reload).
Why grey? ESO exposes no ability-to-set mapping, so attributing every proc automatically is out of scope to maintain. The assignment window lets you label the handful Vermilion can't, and it persists.
Open the ⚙ gear in the window. All values are saved per account.
- Sampling Rate — how often the graph takes a reading (1–10 Hz).
- Time Window — how much history it holds (15 s – 10 min).
- Viewport Alpha — graph background opacity (0–100%).
- Logo — show or hide the floating logo.
- Unknown Contributions — the color-assignment window.
A long window combined with a high sample rate produces a heavy buffer (
time_window_s × sample_hz). Very high combinations ask the chart to draw thousands of samples per frame and can cost FPS. For now, favor lower sample rates for long windows — a future version will draw long buffers far more efficiently.
| Action | How |
|---|---|
| Open / close the window | Click the logo, type /vermilion, or bind a key |
| Bind a key | Controls → Keybindings → Add-Ons → Toggle Vermilion Window |
| Switch views | The ‹‹ / › arrows in the title bar |
| Record a session | Record, then Stop / Flush |
| Open settings | The ⚙ gear icon |
| Color a grey hit | Settings → Unknown Contributions |
| Show / hide the logo | Settings → Logo |
/vermilion help lists the commands in chat.
Three numbers describe your output, mirroring Verdant's healing trio.
eDPS — Effective Damage Per Second. Damage that lands on the target's health.
ShDPS — Shield Damage Per Second. Damage absorbed by the target's damage shields (your "shield-cracking" pressure).
EOS — Effective Output Score. The combined metric, shown live in the header:
Against an unshielded target, EOS and eDPS are the same. The gap between them is the damage being eaten by shields. Exactly what the Outcome view draws.
- Ability classification is heuristic. A few hits (set procs, generic-icon enchants) may show grey until labeled. Use Unknown Contributions to color them yourself.
- Damage attribution follows ESO's source tags. Vermilion counts hits the game attributes to you; environmental and clearly foreign sources are filtered out.
- Very heavy buffers cost FPS. Maxing sample rate and time window together asks the chart to draw thousands of samples per frame. Keep an eye on the recommended combinations.