Localization

rootfont supports multiple languages to serve a global user base.

Supported Languages

• en — English
• zh-Hans — Simplified Chinese (简体中文)
• zh-Hant — Traditional Chinese (繁體中文)
• ja — Japanese (日本語)
• ko — Korean (한국어)
• fr — French (Français)
• de — German (Deutsch)
• es — Spanish (Español)

How Localization Works

rootfont uses Apple's standard localization system with .strings files. Quick Sample presets include dedicated Japanese and Korean text.

When a selected font does not fully support the current preview text, rootfont shows a fallback warning.

Contributing Translations

1. Find the .strings files in the project under Sources/RootFontApp/
2. Add or update translations for your target locale
3. Run python3 scripts/check-l10n.py to validate completeness
4. Submit a pull request with your changes

Validation

The CI pipeline includes a localization check that verifies all strings are present across supported languages. Run locally with:

python3 scripts/check-l10n.py