JSON Formatter
Paste JSON to pretty-print, validate or minify it. Everything runs locally in your browser.
Runs in your browser — your files never leave your device
Indent:
How to use json formatter
- Paste or type your JSON into the input box.
- Click Beautify to indent it, or Minify to compact it to one line.
- If the JSON is invalid, the parser error is shown so you can fix it.
- Copy the result with one click.
Frequently asked questions
Is my JSON uploaded to a server?+
No. Formatting and validation run entirely in your browser — your data never leaves your device.
Does this validate JSON?+
Yes. Malformed JSON is rejected with the exact parser error message so you can find the problem.
What indent options are supported?+
You can beautify with 2 spaces, 4 spaces or tabs, or minify to a single compact line.