JSON Formatter & Validator
Paste JSON to format, validate, minify, or sort keys. Live error highlighting. Everything runs in your browser.
In-browser
No upload
Free
Output will appear here
100% Private
Your JSON is never sent to any server. All parsing and formatting runs locally in your browser.
Instant Validation
Syntax errors are highlighted immediately with the exact line and position of the problem.
Format or Minify
Beautify for readability or minify to reduce file size. Sort keys alphabetically in one click.