JSON Formatter & Validator
Beautify, minify and validate JSON.
How to use the JSON Formatter & Validator
- 1 Paste your JSON into the editor.
- 2 Choose an indent size to pretty-print, or minify to one line.
- 3 Fix any errors shown, then copy the formatted JSON.
Examples
- ▸ Beautifying an API response for debugging.
- ▸ Minifying JSON before embedding it in code.
Frequently asked questions
Is my JSON sent to a server?
No. Formatting and validation run entirely in your browser, so sensitive data in your JSON never leaves your device.
Why does my JSON show an error?
Common causes are trailing commas, single quotes instead of double quotes, or missing brackets. The validator points to the position of the problem.
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