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JSON Formatter

DEVFREE · NO SIGNUP

Format, validate and beautify JSON

JSON Formatter beautifies, validates and tidies JSON. Paste minified or messy JSON and get readable, indented output, with errors flagged. It all runs in your browser.

How to use JSON Formatter

  1. 01Paste your JSON.
  2. 02Format and validate it.
  3. 03Copy the clean, indented result.

Frequently asked questions

Does it validate as well as format?
Yes. Invalid JSON is flagged so you can fix the syntax.
Is my JSON sent anywhere?
No. Formatting happens locally in your browser.
Can it minify too?
It focuses on readable formatting; use the Minifier for compact output.
Is it free?
Yes, free with no sign-up.
● client-side● no upload● privacy-safe
dev › json-format