JSON formatter

• ✅Validate your JSON and surface syntax errors instantly
• ✨Pretty-print with 2-space indentation for readability
• ⚡Or minify to a single compact line
• 🔒Processed entirely in your browser — no data leaves your device

FORMAT (2 SPACES)MINIFY

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.