JSON Formatter & Validator

Beautify, minify, and validate JSON instantly. Pretty-print messy JSON with custom indentation. All processing happens in your browser.

Indent Size:

Input JSON

Output JSON

auto_fix_high

Pretty-print minified or compact JSON with proper indentation and line breaks for easy reading.

compress

Strip whitespace and compress JSON to the smallest possible size for production use.

verified

Instantly check if your JSON is syntactically correct and get a clear error message if not.