JSON Formatter
Format, beautify, and validate JSON data with syntax highlighting
How to Use JSON Formatter
- Paste your JSON into the input field on the left
- Click "Format" to beautify, or "Minify" to compress
- Use "Copy" to copy the result to your clipboard
- View syntax errors highlighted in red if your JSON is invalid
About JSON Formatter
Our free JSON formatter makes it easy to read and debug JSON data. Paste your minified or messy JSON, and instantly get properly indented, color-highlighted output. Perfect for developers working with APIs, configuration files, or debugging data structures. All processing happens in your browser - your data never leaves your device.
Frequently Asked Questions
Is this JSON formatter free to use?
Yes, completely free with no signup required. Use it as much as you need.
Is my JSON data secure?
Absolutely. All processing happens locally in your browser. We never send your data to any server or store it anywhere.
What's the maximum JSON size I can format?
There's no hard limit, but very large files (10MB+) may be slow depending on your browser. For best performance, we recommend files under 5MB.
Can I validate JSON syntax with this tool?
Yes! The formatter automatically validates your JSON and shows detailed error messages if there are syntax problems.