Developer Utility
JSON Formatter & Validator
Paste any JSON string to format it with proper indentation, validate its structure, and see line-by-line error messages if something is wrong. You can also minify JSON for production use and toggle dark/light mode for readability.
json formatterjson validatorjson prettierjson beautifierjson minifierjson parser
Tool not found: json-formatter
How to use it
Turn the output into a validation asset.
1
Paste or type your JSON data into the input area.
2
The tool automatically formats and validates in real time.
3
Copy the formatted output or toggle to minified view for production.
Related tools