Add your language: Libre WebUI translation guide (language #26+)

[rob (rob-x-ai)]

Libre WebUI ships in 25 languages, and adding a new one is mechanical — no code knowledge needed beyond editing JSON.

How:

1. Copy frontend/src/i18n/locales/en.json to <your-locale>.json (BCP-47 code, e.g. sv.json, el.json, th.json).
2. Translate the values (never the keys). Keep interpolations like {{name}} intact.
3. Register the locale in frontend/src/i18n/index.ts and add it to the language picker list (follow how the existing 25 are wired).
4. Run the parity test: npm run test:unit --workspace=frontend — it verifies your file has exactly the same keys as en.json.

Partial fluency is fine: translate what you're sure of well, machine-translate the rest, and note in the PR which sections you verified by hand.

Comment here with the language you're taking so two people don't duplicate work. See CONTRIBUTING.md for setup.