JSON Formatter & Validator
Format, validate, and beautify JSON instantly — 100% client-side, no data sent to any server.
Indent:
InputPaste JSON here
Output
Formatted output will appear here
Paste JSON on the left and click Format
About this tool
Format / Beautify
Pretty-print compact JSON with 2 or 4 space indentation for easy reading and debugging.
Validate
Detect syntax errors instantly. See the exact line and column where the error occurred.
Minify
Strip all whitespace to minimise JSON payload size — perfect for APIs and production use.