JSON Formatting
Beautify minified JSON with proper indentation. Choose from 2 spaces, 4 spaces, or tabs for perfect readability.
Free Online JSON Formatter & Validator
Format, beautify, validate, and convert JSON data instantly. 100% client-side processing - your data never leaves your browser.
Input
Output
Powerful JSON Tools
JSON Validation
Instantly validate your JSON syntax with detailed error messages and line numbers for quick debugging.
Tree View
Explore complex JSON structures with an interactive, collapsible tree view. Navigate nested objects with ease.
Format Conversion
Convert JSON to XML or CSV format with one click. Perfect for data migration and integration tasks.
100% Private
All processing happens in your browser. Your JSON data never leaves your device - completely secure and private.
Keyboard Shortcuts
Power users love our keyboard shortcuts. Format, validate, and navigate without leaving the keyboard.
Frequently Asked Questions
JSON (JavaScript Object Notation) is a lightweight data format used for storing and exchanging data between servers and web applications. When JSON is minified or generated by machines, it becomes difficult to read. Our JSON formatter adds proper indentation and line breaks, making it human-readable for debugging, analysis, and documentation.
Yes, absolutely! Our JSON formatter processes everything directly in your web browser using JavaScript. Your data never leaves your device or gets sent to any server. This makes it completely safe for formatting sensitive data like API responses, configuration files, or any confidential information.
Simply paste your JSON into the input field and click the "Validate" button. Our validator will check for common syntax errors like missing commas, unclosed brackets, invalid quotes, and malformed structures. If errors are found, you'll see detailed messages with line numbers to help you fix them quickly.
Yes! Our tool supports converting JSON to XML and CSV formats. Just paste your JSON, then click "To XML" or "To CSV" buttons. The conversion handles nested objects, arrays, and different data types automatically. You can then copy or download the converted data.
We support several keyboard shortcuts for power users: Ctrl/Cmd + Enter to format, Ctrl/Cmd + M to minify, Ctrl/Cmd + Shift + V to validate, Ctrl/Cmd + Shift + C to copy output, and Ctrl/Cmd + K to clear. Click the "Shortcuts" button in the header for a complete list.