JSON Formatter & Validator
Format, validate, and minify JSON instantly. Pretty-print with 2 or 4 space indentation. 100% browser-based.
No signup. 100% private. Processed in your browser.
Paste JSON to format with proper indentation or minify to a single line. Invalid JSON shows the exact error.
How to use this tool
1
Paste your raw JSON into the input area
2
Click Format to pretty-print or Minify to compress
3
Copy the result or view syntax-highlighted output
Common uses
- Debugging API responses during development
- Formatting config files for readability
- Minifying JSON payloads to reduce file size
- Validating JSON structure before deployment
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