irjson.com - Free JSON viewer, formatter & diff tool — 100% private

IRJSON is a world-class JSON tool that runs entirely in your browser. Format, validate, diff, query and visualise JSON with zero data sent to any server. Features include JSONPath/JMESPath queries, JSON Schema validation, YAML/CSV/TypeScript conversion, AI assistant (BYOK), interactive tree view, and real-time diff comparison.

I'm the maker of IRJSON — thanks for checking it out! I built this because every JSON tool I tried either sent my data to a server, showed ads, or required a sign-up. As a developer, I work with sensitive JSON data (API responses, configs, tokens) and I never felt comfortable pasting it into random tools. So I built irjson.com — everything runs 100% in your browser. Your data never leaves your device. Ever. Here's what makes it different: 🔍 JSON Diff — compare two JSON objects side by side, see exactly what changed ⚡ Query engine — run JSONPath, JMESPath, or jq queries directly against your data (jq runs via WebAssembly!) 🧠 AI Assistant — bring your own API key, chat with your JSON, generate queries in plain English 📊 Visualise — render your JSON as a graph, mind map, or chart 🔄 Convert — export to YAML, CSV, TypeScript types, or Python Pydantic models instantly Works offline too (it's a PWA). I'd love to hear what features would make this a daily driver for your workflow. What do you use JSON tools for most? Try it → https://irjson.com

irjson.com - Free JSON viewer, formatter & diff tool — 100% private

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