JSON Formatter
Format and beautify JSON
JSON Formatter & Beautifier
Format, beautify and validate your JSON data instantly. Free online JSON formatter with syntax highlighting.
Key Features & Highlights
Beautify messy JSON with proper indentation in real-time as you type or paste.
All formatting happens in your browser. Your JSON data never leaves your device.
Automatically detects syntax errors and shows exactly where the problem is.
Choose between 2 spaces, 4 spaces, or tabs based on your coding style.
Copy formatted JSON to clipboard with a single click for instant use.
Use on any device - desktop, tablet, or mobile. No installation required.
How to Use JSON Formatter
Paste Your JSON
Copy your unformatted or minified JSON and paste it into the input area.
Choose Indentation
Select your preferred indentation - 2 spaces, 4 spaces, or tabs.
View Formatted Output
Formatted JSON appears instantly with proper structure and syntax highlighting.
Copy or Download
Copy the beautified JSON to clipboard or download it as a .json file.
Frequently Asked Questions
How does the JSON formatter work?
Our JSON formatter parses your JSON data using JavaScript's built-in JSON.parse() and JSON.stringify() methods with custom indentation. It validates the syntax and formats it with proper structure, making it easy to read and debug.
Is my JSON data stored on your servers?
No, all processing happens entirely in your browser. Your JSON data never leaves your device and is never sent to any server, ensuring complete privacy.
What if my JSON has syntax errors?
The tool will highlight the error location and show a helpful message explaining what went wrong, so you can fix it quickly.
Is there a size limit for JSON input?
You can format JSON files up to several megabytes. Very large files may slow down your browser but will still process successfully.
Can I minify JSON with this tool?
Yes, most JSON formatters include a minify option that removes all whitespace to create the smallest possible JSON string.
Is this JSON formatter really free?
Yes, 100% free with no sign-up required, no limits, and no watermarks. Just clean, fast JSON formatting.