Free Online Tool - No Sign Up Required
Format & Validate JSON Instantly
The fastest way to beautify, minify, and validate your JSON data. Syntax highlighting, error detection, and one-click copy.
Format JSON Now - It's Free 100% Free No Data Stored Works Offline
Why Use JSON Formatter?
Lightning Fast
Instant formatting as you paste. No waiting, no loading screens.
100% Private
Your JSON never leaves your browser. Complete privacy guaranteed.
Developer Friendly
Keyboard shortcuts, error messages, and pro features for daily use.
Everything You Need
- Instant JSON formatting with proper indentation
- Real-time syntax validation with error highlighting
- Minify JSON to reduce file size
- Syntax highlighting for easy reading
- Copy formatted output with one click
- Works 100% in your browser - no data sent to servers
- Dark mode support for comfortable viewing
- Mobile-friendly responsive design