JSON Formatter & Validator
Use our free JSON formatter to format, minify, validate, and beautify JSON code instantly. This JSON formatter provides syntax validation, error detection, and instant formatting - completely free with no registration required.
About JSON Formatter
Our free online JSON formatter and validator helps developers quickly format, validate, and beautify JSON code. Whether you're working with API responses, configuration files, or data structures, this JSON formatter makes JSON manipulation easy and error-free.
The JSON formatter automatically validates your JSON syntax and highlights any errors with precise line and column numbers. You can format JSON with proper indentation for readability, or minify JSON by removing whitespace to reduce file size.
Perfect for developers, API testers, and anyone working with JSON data. The JSON formatter processes all JSON locally in your browser, ensuring complete privacy and security. No data is sent to our servers.
Key Features:
- JSON formatting - Beautify with proper indentation
- JSON minification - Compress by removing whitespace
- Syntax validation - Automatic error detection
- Error highlighting - Line and column numbers for errors
- Privacy-focused - All processing in your browser
- Free and unlimited - No registration required
JSON Input
Formatted JSON
How to Use JSON Formatter
- Paste your JSON code into the "JSON Input" area
- Click "Format" to beautify JSON with proper indentation, or "Minify" to compress JSON
- View the formatted JSON in the output area
- Check the validation status - errors will be highlighted if JSON is invalid
- Click "Copy" to copy the formatted JSON to your clipboard
- Use "Sample" to load example JSON, or "Clear" to reset
Learn more: JSON (JavaScript Object Notation) is a lightweight data-interchange format. Learn more about JSON format and syntax on Wikipedia to understand proper JSON structure.
JSON Formatting Tips
Format vs Minify
Format: Adds proper indentation and line breaks for readability. Best for development and debugging.
Minify: Removes all whitespace to reduce file size. Best for production and API responses.
Common JSON Errors
- Missing quotes around keys:
{"key": "value"}not{key: "value"} - Trailing commas: Remove commas after the last item in objects/arrays
- Single quotes: Use double quotes for strings, not single quotes
- Comments: JSON doesn't support comments
Frequently Asked Questions
Is the JSON formatter free to use?
Yes, our JSON formatter is completely free to use. No registration or payment required.
Does the JSON formatter validate JSON syntax?
Yes, the tool automatically validates JSON syntax and highlights any errors with line and column numbers.
Can I minify JSON code?
Yes, you can minify JSON by selecting the 'Minify' option, which removes all whitespace to reduce file size.
What happens if my JSON is invalid?
If your JSON is invalid, the tool will display an error message indicating the problem, including the line and column where the error occurs.
Is my JSON data stored or saved?
No, your JSON is processed entirely in your browser. Nothing is sent to our servers, ensuring complete privacy and security.
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