JSON Formatter and Validator
Format, minify, and validate JSON in your browser. Copy or download results with input/output sizes. Free JSON formatter for US and UK developers.
Paste JSON to beautify indentation, compress to a single line, or validate syntax. Processing runs locally in your browser—nothing is sent to CodeInspector servers.
Runs entirely in your browser. JSON is not uploaded or stored.
Use cases
- Clean up API responses before documentation or code generation.
- Validate configuration files during debugging.
- Minify JSON payloads for logs or network traces.
Frequently asked questions
Does this JSON formatter store my data?
No. Formatting and validation happen locally in your browser tab.
Can I minify JSON for production?
Yes. Use Minify to remove whitespace. Always keep a formatted copy in source control when humans edit the file.
Why do I see a line and column in errors?
The parser reports the approximate location of the first syntax error to speed up fixes.
Related tools
Need deeper checks across a whole repository? Try static code analysis with CodeInspector.