JSON Formatter & Minifier
Format, minify, and validate JSON data. All processing happens in your browser.
Raw JSON Input Input
Formatted Output Minified
How to Use
About
What is JSON?
JSON (JavaScript Object Notation) is a lightweight, text-based data interchange format. It's easy for humans to read and write, and easy for machines to parse and generate.
Want to learn more? Check out the official JSON documentation
Features
Formatting Features
- ✓ Format and beautify minified JSON
- ✓ Minify JSON to reduce file size
Validation Features
- ✓ Real-time JSON validation
- ✓ Detailed error messages with line numbers
- ✓ Copy formatted output with one click
Privacy & Security
Your JSON data privacy is our top priority:
- • All JSON processing happens entirely in your browser
- • Your data never leaves your device or gets sent to our servers
- • No data is stored, cached, or logged anywhere
- • Works completely offline once loaded
Frequently Asked Questions
- Removes outer quotes from double-encoded JSON strings
- Unescapes backslashes and quotes
- Adds quotes around unquoted object keys
- Converts single quotes to double quotes
- Removes trailing commas
- Fixes boolean and null values (True→true, None→null)
- Removes JavaScript-style comments
Use "Clean" for basic fixes or "Auto-Fix" for comprehensive cleaning and formatting.
What's upcoming?
Syntax Highlighting
Color-coded JSON with proper syntax highlighting for better readability.
Schema Validation
Validate JSON against custom schemas (JSON Schema support).
Tree View
Interactive tree view for exploring nested JSON structures.
File Upload
Drag and drop JSON files for instant formatting.
Diff Viewer
Compare two JSON objects and highlight differences.