JSON Formatter & Validator — Free
Format, validate, and minify JSON instantly. 100% in your browser — free, no sign-up, no upload.
Format and validate JSON
Paste JSON to pretty-print, minify, or catch syntax errors. Everything runs in your browser — your data is never sent anywhere.
How to
- 1 Paste your JSON.
- 2 Click Format or Minify.
- 3 Copy the result.
FAQ
Is it free? +
Yes, completely free with no file limits.
Is my data private? +
Yes — this tool runs entirely in your browser. Your files and text are never uploaded.