JSON Formatter
Format, validate, and beautify JSON data with customizable indentation.
How to Use the JSON Formatter
Paste your JSON data into the input field on the left. The formatter will automatically validate your JSON and display any syntax errors. Click "Beautify" to format the JSON with proper indentation, or "Minify" to compress it into a single line.
Features
- Instant Validation - See validation status in real-time as you type
- Beautify - Format JSON with proper indentation and line breaks
- Minify - Compress JSON to a single line for smaller file size
- Custom Indentation - Choose between 2 or 4 spaces
- Sort Keys - Alphabetically sort object keys for consistency
- Statistics - View key count, object count, array count, and file size
Pairs well with the YAML ↔ JSON Converter and the URL Encoder when working with API payloads.
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate. It is based on a subset of JavaScript and is commonly used for:
- API responses and requests
- Configuration files
- Data storage and transfer
- Web application data exchange
Frequently Asked Questions
Is my JSON data secure?
Yes! All JSON processing happens entirely in your browser. Your data is never sent to any server or stored anywhere.
What causes JSON validation errors?
Common JSON syntax errors include:
- Missing or extra commas
- Unquoted property names (JSON requires double quotes)
- Single quotes instead of double quotes
- Trailing commas after the last item
- Missing closing brackets or braces
Why should I minify JSON?
Minifying JSON removes all unnecessary whitespace, reducing file size. This is useful for:
- Faster network transfer
- Reduced storage space
- Embedding JSON in URLs or other compact formats