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Use AI technology to quickly translate your JSON language files. Fast, accurate, and easy to use.
Traffic, search & AI signals for jsontrans.fun.
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i18n JSON Translation Tool is an AI-powered browser-based utility that translates JSON language files into over 30 languages, preserving the original JSON structure and formatting. It operates entirely within the user's browser, using API keys from providers like DeepSeek, Google, Anthropic, and OpenAI to perform translations without uploading data to any server.
i18n JSON Translation Tool is a web application that takes a JSON file (up to 10 MB) and a target language, and produces a translated JSON file with the same keys and structure. It runs exclusively client-side, meaning no data leaves the user's machine except API calls directly to the chosen AI provider. The tool is developed and maintained by an independent team (site: jsontrans.fun) and has been featured on Product Hunt, Startup Fame, Fazier, Twelve Tools, Turbo0, and AI Hunt List.
en.json, select Japanese, enter your DeepSeek API key, and get a structurally identical ja.json with translated values, ready to drop into your project.It translates JSON language files (like those used for i18n in web apps) into multiple languages while keeping the exact same keys and nesting structure. The translation is performed by AI models from DeepSeek, Google, Anthropic, or OpenAI, depending on your choice.
All operations are performed locally in your browser. Your JSON file and API key are never sent to jsontrans.fun servers. The only external data transmission is your file content sent directly from your browser to the AI provider's official API endpoint (e.g., api.deepseek.com). After you close the tab, everything is cleared.
Over 30 languages are supported, including English, Russian, Spanish, German, Turkish, French, Japanese, Portuguese, Simplified Chinese, Traditional Chinese, Italian, Arabic, Polish, Greek, Dutch, Indonesian, Korean, Thai, and more. The full list is visible in the language dropdown on the site.
Yes, the maximum file size is 10 MB. For larger files, the tool recommends translating them in batches.
Using AI models from reputable providers (DeepSeek, Google, Anthropic, OpenAI) helps ensure accuracy. The tool also supports custom dictionaries (mentioned in the FAQ on the site) to maintain consistency for specific terms, though this feature is not detailed in the current interface.