JSON Formatter — Format, Validate & Beautify JSON Online

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**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.