Dev
JSON Formatter
Format, minify, and validate JSON. Catch syntax errors with line and position info.
Paste JSON to format or validate
We'll check for errors and show you formatted output
Frequently asked questions
What does 'Format' do?
Format takes any valid JSON and pretty-prints it with 2-space indentation. Nested objects and arrays are broken across multiple lines for readability. The result replaces the input so you can copy it directly.
What does 'Minify' do?
Minify strips all whitespace from valid JSON, producing the most compact representation possible. This is useful for reducing file size in production or when sending JSON over the wire.
How does error reporting work?
When JSON is invalid, the parser error is displayed along with the character position (and line/column) where the error was detected. This helps you quickly locate syntax mistakes like missing commas or brackets.
Validate, format, and minify JSON with a single click. Paste any JSON string and instantly see it formatted with proper indentation, or minified for production use.
Error reporting pinpoints syntax issues with line and column numbers. Compare original, formatted, and minified sizes to see exactly how much space you save. All processing is client-side — nothing is sent to a server.