How to Format and Validate JSON - Free JSON Formatter

JSON (JavaScript Object Notation) is a popular data format used in web development and APIs. Our free JSON formatter helps you format, validate, and beautify JSON code quickly.

Why Format JSON?

• Readability: Formatted JSON is easier to read and understand
• Debugging: Proper formatting helps identify errors
• Validation: Check if your JSON is valid before using it
• Documentation: Well-formatted JSON is easier to document

How to Format JSON

1. Visit our JSON Formatter & Validator
2. Paste your JSON code into the input field
3. Click "Format" to beautify the JSON
4. Click "Validate" to check for errors
5. Copy the formatted JSON

Common JSON Errors

• Missing commas between properties
• Trailing commas (not allowed in JSON)
• Unquoted keys (keys must be in quotes)
• Single quotes instead of double quotes
• Unclosed brackets or braces

JSON Formatting Tips

• Always validate JSON before using it in production
• Use consistent indentation (2 or 4 spaces)
• Keep JSON files under version control
• Use a JSON schema validator for complex structures

Our JSON formatter works entirely in your browser - your data never leaves your device, ensuring complete privacy.