JSON Formatter
Advanced JSON Editor - Professional Formatting & Validation
Professional JSON editor with advanced features including syntax highlighting, tree view, drag & drop file upload, and intelligent validation. Perfect for developers, API testing, and data processing.
Advanced JSON Editor
Input JSON
Formatted Output
Advanced Editor
Syntax highlighting, line numbers, and automatic indentation for the best editing experience.
Privacy First
All processing happens locally in your browser. No data is sent to servers.
Tree View
Visualize your JSON structure with our interactive tree view for better understanding.
How to Use JSON Formatter
Step-by-Step Guide
- Paste your JSON data or drag & drop a JSON file
- Choose formatting options (indentation, spacing)
- Click "Format JSON" to beautify your data
- Use "Minify" to reduce file size
- Copy or download the formatted JSON
Advanced Features
- • Syntax Highlighting: Color-coded JSON structure
- • Tree View: Hierarchical data visualization
- • Validation: Real-time error detection
- • Minification: Remove unnecessary whitespace
- • Copy to Clipboard: One-click copying
Popular JSON Formatter Questions
How to format JSON online?
Simply paste your JSON data into our formatter and click "Format JSON" to get beautifully formatted, readable JSON.
What is JSON validation?
JSON validation checks if your JSON data follows the correct syntax and structure, highlighting any errors.
How to minify JSON?
Use our "Minify" feature to remove all unnecessary whitespace and reduce file size for production use.
Is my JSON data secure?
Yes! All processing happens locally in your browser. No data is sent to our servers, ensuring complete privacy.
Why Use Our Free JSON Formatter?
Advanced Features
- • Syntax highlighting for better readability
- • JSON validation with detailed error messages
- • Minify JSON to reduce file size
- • Beautify and format JSON with custom indentation
- • Copy formatted JSON to clipboard
- • Download formatted JSON as file
Perfect For
- • API development and testing
- • Data analysis and processing
- • Configuration file formatting
- • Debugging JSON responses
- • Code review and documentation
- • Web development projects
💡 JSON Formatting Best Practices
• Always validate JSON before using it in production
• Use consistent indentation (2 or 4 spaces)
• Keep JSON files well-formatted for better readability
• Minify JSON for production to reduce file size
• Use descriptive key names in your JSON objects
• Consider using JSON Schema for validation
❓ Frequently Asked Questions
Is this JSON formatter free to use?
Yes, our JSON formatter is completely free to use. No registration or payment required.
Is my JSON data secure?
Absolutely! All processing happens locally in your browser. No data is sent to our servers, ensuring complete privacy.
What file formats are supported?
You can paste JSON text directly or upload .json files via drag & drop or file input.
Can I download the formatted JSON?
Yes! You can download the formatted JSON as a .json file with one click.
Does it work on mobile devices?
Yes, our JSON formatter is fully responsive and works perfectly on all devices.
How accurate is the JSON validation?
Our validator uses industry-standard JSON parsing and provides detailed error messages for any syntax issues.
📝 Example JSON for Testing
{
"name": "John Doe",
"age": 30,
"email": "john@example.com",
"address": {
"street": "123 Main St",
"city": "New York",
"country": "USA"
},
"hobbies": ["reading", "swimming", "coding"],
"settings": {
"theme": "dark",
"notifications": true
}
}Copy this example and paste it into the formatter to test the features!
⭐ Why Developers Choose Our JSON Formatter
Fast & Reliable
Instant formatting with no server delays. Works offline once loaded.
Advanced Features
Syntax highlighting, tree view, validation, and more professional tools.
Privacy First
Your data never leaves your browser. Complete privacy and security.
Developer Friendly
Keyboard shortcuts, drag & drop, and modern UI designed for developers.