JSON Formatter — Format, Validate & Beautify JSON Online

Format, validate, and beautify JSON with a single click. Auto-fixes common issues, sorts keys, and minifies — 100% in your browser. This free online tool runs entirely in your browser — no data is ever uploaded to a server.

How to Use

1. Paste JSON — raw or minified, single-line or pretty — into the editor.

2. Format / Beautify — clean indented output; invalid JSON is flagged with its position.

3. Validate — pass/fail with the exact error location.

4. Extra tools — minify, sort keys, escape/unescape, and one-click copy.

Example

Paste a minified API response and the formatter produces clean 2-space indented JSON, flags any syntax error with its position, and you can copy the pretty version straight to your clipboard.