JSON Parser Pro — a free, 100% browser-based JSON toolkit, 15 tools in one place. Format, validate, beautify and minify JSON. Auto-repair broken JSON (trailing commas, comments, missing brackets). Generate and validate JSON Schema. Convert JSON to YAML, XML, CSV. Decode JWT, encode Base64, diff JSON objects, query with JSONPath, generate TypeScript types. No signup, no account — your data never leaves the browser.
Hey Product Hunt 👋
Built this because I was tired of JSON tools that either gate basic formatting behind
a signup wall or send your data to a server you don't control. Everything here runs
in your browser — open devtools, check the network tab, nothing leaves your machine.
Happy to answer anything about the build (Next.js 16 + React 19) or take feature
requests — what's missing that you'd want in a JSON toolkit?
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