JSON Formatter

Format and validate JSON data

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About JSON Formatter


JSON (JavaScript Object Notation) is the most widely used data interchange format in web development. This tool formats (pretty-prints) JSON for readability, minifies it for production use, and validates JSON syntax. The output includes syntax highlighting with color-coded keys, strings, numbers, booleans, and null values.




  

    
Q: What does Format do vs. Minify?

    
Format adds indentation and line breaks for human readability. Minify removes all whitespace to produce the smallest possible output, ideal for API payloads and configuration files.

  

  

    
Q: Can this fix invalid JSON?

    
No. This tool parses JSON strictly according to the specification. If your JSON is invalid (e.g., trailing commas, single quotes), it will show an error message indicating what's wrong.

  

  

    
Q: Is there a size limit?

    
There's no hard limit since processing happens in your browser. However, extremely large JSON documents (10MB+) may cause the browser to slow down depending on your device.