JSON Formatter
Format and validate JSON with syntax highlighting
About JSON Formatter
Format, validate, and beautify JSON online. Pretty print with syntax highlighting. Minify JSON too. Free.
Frequently Asked Questions
How do I format JSON online?
Paste your JSON into the editor and click 'Format'. The tool will indent and colorize it instantly.
Can this validate JSON?
Yes. Any syntax errors are highlighted with the line number and error description.
What is minified JSON?
Minified JSON removes all whitespace to reduce file size — useful for API responses and production code.