JSON Formatter & Validator
Paste your JSON to format, validate, or minify it instantly. Catches errors and shows exactly where they are.
How to Use This JSON Formatter
- Paste or type your JSON in the input area
- Click Format to beautify or Minify to compress
- Errors appear instantly with line and position info
- Click Copy to copy the result to your clipboard
What This Tool Does
- Format/Beautify - Adds proper indentation (2 or 4 spaces)
- Validate - Checks if your JSON is valid and shows errors
- Minify - Removes all whitespace for smaller file size
Frequently Asked Questions
Is my data safe?
Yes. Everything runs in your browser. No data is sent to any server.
What JSON errors does it catch?
Missing commas, extra commas, unquoted keys, mismatched brackets, invalid values, and more.
Can I use this for large JSON files?
This tool handles files up to several MB comfortably. For very large files (50MB+), use a desktop tool.