Jsonic — Fast Private JSON Tools
JSON tools that never see your data
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Tommy

Jsonic — Fast Private JSON Tools - JSON tools that never see your data

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Jsonic is a suite of JSON developer tools that run entirely in your browser. Format, validate, convert, and diff JSON without sending a single byte to a server. **Tools included:** - JSON Formatter / Minifier / Validator - JSON → TypeScript (with proper type inference) - JSON → CSV (with nested field flattening) - JSON → YAML - CSV → JSON - JSON Diff (structural, not text-based) No sign-up. No ads. No cookie banners. Just open it and work.

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Tommy
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Hi PH! 👋 I built Jsonic after one too many times pasting prod API payloads into random online tools and later realizing they were hitting a server. The two tools I'm most proud of: the **TypeScript generator** (handles nullable fields, mixed-type arrays, recursive interfaces) and the **JSON Diff** (structural comparison — key order and whitespace don't produce noise). Would love feedback from devs who use these tools daily. What's missing? What's broken? Roast away.