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. Also check out the live tool at freeq.one/tools/json — part of the FreeQ.One suite of free online tools.