JSON Formatter – Free Online JSON Beautifier & Validator
Format, beautify, and validate your JSON code instantly with our free online JSON formatter. Transform minified or messy JSON into clean, readable format with proper indentation and syntax highlighting. Perfect for developers, API testing, and data analysis. No registration required – just paste your JSON and format it in seconds.
JSON Statistics:
Auto Format
Instantly format and beautify your JSON with proper indentation, making it easy to read and understand.
Validate JSON
Automatically detect and highlight JSON syntax errors with detailed error messages and line numbers.
Mobile Friendly
Works perfectly on all devices - desktop, tablet, and mobile. Responsive design for optimal experience.
How to Use the JSON Formatter
Paste Your JSON
Copy and paste your minified or unformatted JSON code into the input textarea above.
Click Format JSON
Press the "Format JSON" button to beautify your code with proper indentation and structure.
Copy or Download
Use the Copy button to copy the formatted JSON or download it as a file for later use.
Validate & Debug
Any syntax errors will be highlighted with detailed error messages to help you fix issues.
Common Use Cases for JSON Formatting
API Development
Format API responses and requests for better readability during development and testing
Debugging
Identify and fix JSON syntax errors with clear error messages and validation
Data Analysis
Make complex JSON data structures easier to read and analyze
Configuration Files
Format configuration files and settings for better maintainability
Data Sharing
Clean up JSON before sharing with team members or in documentation
Learning
Understand JSON structure better with properly formatted and indented code
Frequently Asked Questions
What is JSON formatting?
JSON formatting (or beautifying) is the process of adding proper indentation, line breaks, and spacing to JSON code to make it more readable and easier to understand.
Is my JSON data secure?
Yes, absolutely! All JSON processing happens locally in your browser. Your data is never sent to our servers or stored anywhere. Everything is processed client-side for maximum security.
What's the difference between formatting and minifying?
Formatting adds indentation and line breaks to make JSON readable, while minifying removes all unnecessary whitespace to reduce file size. Both are useful for different purposes.
Can I format large JSON files?
Yes, our formatter can handle large JSON files. However, very large files (several MB) might take a moment to process and could slow down your browser.
What if my JSON has syntax errors?
Our validator will detect syntax errors and show you exactly what's wrong and where the error occurs, helping you fix the JSON quickly.