JSON Formatter
Input
Output
Start typing to format your JSON
Your formatted JSON will appear here
About JSON Formatter
Our free online JSON Formatter is a powerful tool designed for developers and data analysts. It helps you beautify, validate, and minify JSON data instantly in your browser. Whether you're debugging API responses, formatting configuration files, or validating data structures, this tool makes working with JSON effortless and efficient.
Key Features
Real-time Formatting
See your JSON formatted instantly as you type, with live syntax validation.
Syntax Validation
Automatically detects and highlights JSON syntax errors with helpful error messages.
Beautify & Minify
Switch between pretty-printed format for readability or minified format for production.
100% Client-side
All processing happens in your browser. Your data never leaves your device.
Copy & Download
Easily copy formatted JSON to clipboard or download as a .json file.
Syntax Highlighting
Monaco editor provides professional syntax highlighting and code folding.
How to Use
- 1Paste your JSON data into the input area on the left side.
- 2The tool automatically formats and validates your JSON in real-time.
- 3Use the 'Beautify' or 'Minify' toggle to switch between formats.
- 4Check the status badge to see if your JSON is valid.
- 5Click 'Copy' to copy the formatted output or 'Download' to save as a file.
- 6Use 'Clear All' to reset and start fresh.
Pro Tips
- 💡Use keyboard shortcut Ctrl+V (Cmd+V on Mac) to quickly paste JSON data.
- 💡The Monaco editor supports code folding - click the arrows next to line numbers to collapse sections.
- 💡Minified JSON is smaller in size, perfect for API payloads and configuration files.
- 💡If you see a validation error, check for missing commas, brackets, or quotation marks.