Qontract Localize

Instantly translate JSON localization files with Qontract’s AI. Translate i18n keys and preview results in real time.

Instantly translate your JSON localisation files (i18n, l10n) directly in your browser — even on GitHub, GitLab, or any webpage. Qontract helps developers, translators, and product teams manage multilingual apps faster with AI-driven translation and real-time previews. What it does - Translate JSON files instantly — detects and translates i18n keys and values in JSON files with just one click - Real-time preview — see translated results immediately before saving - Preserves JSON structure — keeps your key/value pairs perfectly formatted - Context-aware AI — understands placeholders, variable names, and syntax so nothing breaks - Multiple languages supported — translate between 25+ languages, including English, German, Japanese, Polish, and more Use Cases - Developers maintaining multilingual SaaS or web apps - Localization managers verifying translations before deployment - Open-source contributors translating project files directly on GitHub - Product teams testing UI copy in different languages without switching tools Why Install Qontract? - Save hours by automating repetitive translation work - Boost accuracy with AI trained for localisation data - No need for external tools — everything happens inside your browser - Ideal for i18n workflows in frameworks like React, Vue, Angular, and Next.js - Privacy-focused — your JSON data stays protected, only translation text is processed Perfect For - Frontend and full-stack developers - SaaS builders and startups - Localization teams and translators - Open-source maintainers