JSON Formatter & Minifier

This free online JSON formatter and minifier helps you format, validate, and compress JSON data quickly and easily. Perfect for developers, QA engineers, and anyone working with APIs and configuration files.

All JSON processing is done locally in your browser - your data never leaves your device.

1. Paste or type your JSON data in the input area
2. Choose an action:
   • Format: Pretty-print JSON with proper indentation
   • Minify: Compress JSON to a single line
   • Validate: Check if your JSON is valid
3. Copy the result or download as a .json file

• Format JSON: Add proper indentation and line breaks
• Minify JSON: Remove whitespace and compress to one line
• Validate JSON: Check syntax with detailed error messages
• Multiple indentation options: 2 spaces, 4 spaces, or tabs
• Copy to clipboard: One-click copying
• Download as file: Save formatted or minified JSON
• Preserves data: All formatting maintains data integrity

Your privacy is important. This tool processes all JSON data entirely in your browser.

• No data is sent to any server
• No logging or tracking of your JSON content
• Works completely offline after initial page load
• Safe for sensitive configuration files and API responses

• API Development: Format API responses for easier reading
• Debugging: Validate and format JSON data to find errors
• Configuration Files: Format or minify JSON config files
• Data Analysis: Make JSON data more readable
• Optimization: Minify JSON for reduced file sizes
• Code Review: Format JSON for better code review