JSON syntax errors can break APIs and crash applications. Here is how to fix them fast.
Common JSON Mistakes
- Single quotes instead of double quotes
- Trailing commas after the last array/object item
- Missing quotes around object keys
- Comments inside JSON (not allowed)
How to Format JSON
A JSON formatter takes minified or malformed JSON and adds proper indentation and line breaks, making it readable and debuggable.
Use our free JSON Formatter to instantly format, validate, and minify JSON with syntax highlighting.