Tools
JSON Formatter
Paste raw JSON to instantly beautify it with configurable indentation, or minify it to a single line. Syntax errors are detected and reported immediately.
FreeBeautify & MinifyError Detection
Input JSON
Formatted Output
Formatted output will appear here…When to format vs. minify JSON
Use pretty-printing when reading, debugging, or reviewing JSON data. Use minification when sending JSON over a network or embedding it in code — removing whitespace can reduce payload size by 20–40% for typical API responses.
Common JSON syntax errors
- Trailing commas after the last property or element (not allowed in standard JSON)
- Single quotes instead of double quotes for strings and keys
- Comments (not part of JSON standard)
- Unquoted property keys
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