JSON Formatter & Validator
Beautify, minify, and validate your JSON data instantly. Perfect for debugging, formatting API responses, or cleaning up JSON files.
JSON Input
⚡ Ready to process
Result
Result will appear here after processing...
Advanced Options
What is JSON Formatter?
JSON Formatter is a free online tool that beautifies (pretty-prints) or minifies JSON data. It also validates your JSON to ensure it's correctly formatted and free of syntax errors.
How to Use
- Paste your JSON data in the input box
- Click "Format JSON" button
- View the formatted result with proper indentation
- Copy or download the formatted JSON
Example
Input (minified):
{"name":"John","age":30,"city":"New York","skills":["JavaScript","React","Node.js"]}
Output (formatted):
{
"name": "John",
"age": 30,
"city": "New York",
"skills": [
"JavaScript",
"React",
"Node.js"
]
}
Features
- ✅ Beautify JSON - Add proper indentation and line breaks
- ✅ Minify JSON - Remove whitespace to reduce file size
- ✅ Validate JSON - Check for syntax errors
- ✅ Custom Indentation - Choose 2, 4 spaces or compact format
- ✅ Instant Results - Process JSON in milliseconds
- ✅ No Signup - Use immediately
FAQ
What is valid JSON?
Valid JSON must have proper syntax: keys in double quotes, no trailing commas, and correct bracket/brace matching. Our tool will tell you if your JSON is invalid.
Why beautify JSON?
Beautified JSON is easier to read and debug. Minified JSON is better for production as it reduces file size and improves loading speed.
Is my JSON data stored?
No. All processing happens in your browser. We never store or transmit your data.