Free JSON Formatter & Validator
Format, validate, and minify JSON data online. Perfect for developers, API testing, and data processing. Includes error detection and JSON analytics.
Instant Validation
Error Detection
JSON Analytics
JSON Input
Paste your JSON data or upload a JSON file
Valid JSON - Ready to format or minify
Formatting Options
Formatted JSON
Minified JSON
JSON Formatter Guide
Features:
- • Real-time JSON validation
- • Pretty formatting with custom indentation
- • JSON minification for production use
- • Error detection with line numbers
- • JSON analytics and statistics
- • File upload and download support
- • Key sorting option
- • Copy to clipboard functionality
Common Use Cases:
- • API response formatting
- • Configuration file validation
- • Data structure analysis
- • JSON debugging and troubleshooting
- • Code documentation preparation
- • Database export formatting
- • JSON schema validation
- • Production optimization
Frequently Asked Questions
What's the difference between formatted and minified JSON?
Formatted JSON includes proper indentation and line breaks for readability, while minified JSON removes all unnecessary whitespace to reduce file size for production use.
How does error detection work?
Our validator parses your JSON and provides detailed error messages with line and column numbers to help you quickly identify and fix syntax issues.
Is my JSON data safe?
Yes, all JSON processing happens locally in your browser. Your data is never sent to our servers, ensuring complete privacy and security.
What file formats are supported?
You can upload .json and .txt files. The tool will attempt to parse any text content as JSON and provide appropriate validation feedback.