Format, beautify, and validate JSON instantly in your browser. Free JSON formatter with syntax validation, minify option, and clear error messages. No sign-up needed.
BeautifyMinifyValidateError MessagesFree
Paste your JSON
Output
Quick reference
What it is
A tool that takes raw, unformatted JSON and adds proper indentation and line breaks to make it human-readable.
How to use it
Paste your JSON into the input box
Click Beautify to format it cleanly
Click Minify to compress it to one line
Click Copy to grab the output
When you need this
API response is one long unreadable line
Checking if your JSON has a syntax error
Sending clean JSON in documentation
Debugging a webhook or API payload
Good to know
JSON keys must use double quotes — not single quotes
Trailing commas after the last item are not allowed
This tool never sends your data to any server
Numbers, booleans, and null do not need quotes
What else we build
Tamil Brothers is an indie studio building games, Discord bots, and digital tools. All free.