JSON Formatter
Beautify or minify JSON with advanced formatting options. Validate, sort keys, customize indentation, and analyze JSON structure with detailed statistics.
Formatting Mode
Formatting Options
Recommended Settings
Formatting Modes
- •Use beautify mode for development, debugging, and reading JSON
- •Use minify mode for production to reduce file size and bandwidth
- •Toggle between modes instantly to see size differences
Configuration Options
- •Choose 2-space indentation for web projects (most common)
- •Enable 'Sort keys alphabetically' for consistent version control diffs
- •Use tabs for projects that require tab-based indentation
Pro Tips
- •Paste JSON directly - it auto-formats when valid JSON is detected
- •Watch compression metrics to see bandwidth savings
- •Structure analysis shows complexity: depth, keys, arrays, objects
- •Download formatted JSON with appropriate filename
Most Popular
Most users beautify with 2-space indentation for development work
When to Use This Tool
Use beautify mode when working with minified JSON that's hard to read. Perfect for debugging API responses, examining configuration files, or reviewing data structures during development.
Use minify mode before deploying JSON to production. Removes all unnecessary whitespace and line breaks to reduce file size, minimize bandwidth usage, and improve loading times.
Enable 'Sort keys alphabetically' when you need consistent JSON output for version control, generating diffs, or maintaining standardized configuration files across environments.
Use the formatter to validate JSON syntax before sending to APIs or saving to files. Get detailed error messages that pinpoint exactly where syntax errors occur.
How It Works
Select 'Beautify' to format JSON with proper indentation and line breaks, or 'Minify' to compress JSON by removing all whitespace
In beautify mode, choose your preferred indentation (2 spaces, 4 spaces, or tabs)
Optionally enable 'Sort keys alphabetically' to standardize key ordering for consistent version control
Type or paste your JSON into the input field - it auto-formats on paste when valid JSON is detected
Click the format button to process your JSON and see detailed validation messages
View comprehensive statistics: file size changes, compression metrics (minify mode), and structure analysis (depth, keys, arrays, objects)
Copy the formatted JSON to clipboard or download as a .json file with appropriate filename
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Pure JavaScript for optimal performance on modern browsers.
Secure
No data collection, no tracking, no sign-up required.
Frequently Asked Questions
What's the difference between beautify and minify?
Beautify adds indentation, line breaks, and spacing to make JSON human-readable. Minify removes all unnecessary whitespace to create the smallest possible file size. Beautified JSON is easier to read and debug, while minified JSON is better for production use to reduce bandwidth.
Will sorting keys change my JSON data?
No, sorting keys only changes the order in which object properties appear, not the actual data or values. The JSON remains functionally identical. This is useful for creating consistent output, especially when committing to version control systems.
What indentation should I use?
2 spaces is the most common choice for web projects and follows Google's JSON style guide. 4 spaces is traditional for some languages. Tabs offer flexibility but can display inconsistently. Choose based on your project's coding standards.
How does the auto-format on paste work?
When you paste text into the input field, the tool automatically detects if it's valid JSON. If valid, it formats the JSON immediately using your current mode and settings. This saves you a click for quick formatting tasks.
What does the JSON structure analysis show?
The structure analysis counts: (1) Max nesting depth - how many levels deep your objects/arrays go, (2) Total keys - all property names across all objects, (3) Total arrays - number of array structures, (4) Total objects - number of object structures. This helps understand JSON complexity.
Is my JSON data secure?
Yes, all processing happens entirely in your browser using JavaScript. Your JSON is never sent to any server - it stays on your device. This makes it safe to format sensitive configuration files, API keys, or private data.