Crowdin
Localization & translation management platform for apps, websites and docs
Languine
AI-driven CLI that automates app localization across 100+ languages
Languine CLI lets developers generate, update, and manage translations automatically using AI, detecting changes via Git diff and supporting many file formats from the command line.
Overview
Who should use Languine?
Languine is built for developers who want to keep their applications multilingual without leaving the terminal. It fits teams that already use Git for version control and prefer a code‑centric workflow, especially those working with JavaScript/TypeScript stacks.
What it does
The CLI scans your repository’s Git diff to discover new, changed, or removed translation keys. It then calls modern AI translation services to produce context‑aware strings in over a hundred languages, writing the results back to supported formats such as JSON, YAML, PO, and iOS strings files. Hooks let you run Biome or Prettier to enforce consistent formatting, and the tool can be added to CI pipelines to keep localization in sync on every pull request.
How to get started
Install with npx languine@latest, configure your AI provider credentials, and run the command in any project directory. Languine handles extraction, translation, and cleanup automatically, letting you focus on feature development rather than manual localization work.
Highlights
AI‑powered translations for 100+ languages
Git diff‑based smart detection of new, changed, or removed keys
Support for multiple file formats (.json, .ts, .md, .yaml, .po, .strings, etc.)
Hook integration with Biome or Prettier for post‑processing
Pros
- Significant time savings compared to manual translation
- Context‑aware output maintains tone and intent
- Seamless command‑line integration fits existing developer workflows
- TypeScript codebase provides type safety and IDE support
Considerations
- Relies on external AI services, incurring usage costs and latency
- Requires internet connectivity for translation calls
- Limited to the file formats explicitly supported
- No graphical UI; all interactions are CLI‑based
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Fit guide
Great for
- Small to medium web applications needing rapid localization
- Teams that already use Git and CI/CD pipelines
- Developers who prefer command‑line tools over web dashboards
- Projects built with JavaScript/TypeScript ecosystems
Not ideal when
- Large enterprises that require a full‑featured TMS UI
- Offline‑only environments without internet access
- Projects whose assets are primarily non‑text (e.g., images, video)
- Teams without automated build or deployment pipelines
How teams use it
Add new feature strings
Automatically extracts newly introduced keys and generates translations, eliminating manual entry.
Update existing UI text
Detects modified strings and refreshes translations to keep all languages in sync.
Remove deprecated keys
Cleans translation files by deleting entries that are no longer used in the codebase.
Integrate into CI pipeline
Runs Languine on each pull request to ensure localization stays current before merge.
Tech snapshot
TypeScript91%
MDX8%
CSS1%
PLpgSQL1%
JavaScript1%
Dockerfile1%
Frequently asked questions
What AI models does Languine use for translation?
Languine connects to modern AI translation APIs (e.g., OpenAI, Anthropic) that you configure via environment variables.
How many languages are supported?
The tool supports translation into more than 100 languages.
Can I customize the translation style?
Yes, you can use hooks to run Biome or Prettier for post‑processing or apply custom formatting scripts.
Is there any cost to use Languine?
The CLI itself is free; any charges come from the underlying AI translation service you choose.
Does Languine work with existing i18n libraries?
It updates standard resource files, so it can be used alongside popular i18n solutions without conflict.
Project at a glance
Stable- Stars
- 1,936
- Watchers
- 1,936
- Forks
- 126
Repo age1 year old
Last commit10 months ago
Primary languageTypeScript
Last synced yesterday