JSON Formatter & Validator
Format, beautify, minify, and validate JSON data with syntax error detection.
How to Use JSON Formatter
- Paste your JSON into the input field
- Select your preferred indentation
- Click Format to beautify, Minify to compress, or Validate to check
- Copy the result or download as a file
Features
- Format/Beautify - Add proper indentation and line breaks
- Minify - Remove all whitespace for smaller file size
- Validate - Check if JSON is valid with error details
- Customizable Indent - 2 spaces, 4 spaces, or tabs
Common JSON Errors
- Missing or extra commas
- Unquoted property names
- Single quotes instead of double quotes
- Trailing commas after last item
- Missing closing brackets or braces
Why Format JSON?
- Improve readability for debugging
- Easier to compare JSON structures
- Spot errors in nested data
- Prepare for documentation
- Works entirely in your browser - no data is sent to any server