JSON formatter

How to format and validate JSON online

Paste your JSON into the text area and click Format to pretty-print it with 2-space indentation, or click Minify to compress it to a single line. Parse errors are shown inline so you can identify and fix invalid syntax immediately. Everything runs in your browser — nothing is sent to a server.

Common uses: making a minified API response readable for debugging, validating a configuration file before deploying, compressing a JSON payload before transmitting it over a network, or preparing readable structured data to include in documentation.