JSON Formatter Online - EXUtil Extended Utilities

Free online JSON formatter and beautifier. Format, indent, and syntax-highlight compressed JSON data for easy reading. Perfect for developers debugging APIs.

How to use

  1. Paste or import the content you want to process.
  2. Choose an available action and run the tool.
  3. Review the result, then copy or download the output.

Frequently asked questions

What is the purpose of JSON formatting?
JSON formatting converts compressed, hard-to-read JSON data into a format with indentation and line breaks, making the data structure clearly visible and easier to debug and read. Formatted JSON maintains the original data content, only adjusting the display format.
How to adjust indentation size?
The current version uses standard 2-space indentation for formatting. Formatted JSON automatically adopts standard formatting with appropriate line breaks and indentation, making nested structures clear at a glance.
Will formatting change the data content?
No. Formatting only changes how JSON is displayed by adding indentation and line breaks. The data content, data types, and values remain completely unchanged. You can safely use the formatting feature to beautify JSON data.
What size JSON files are supported?
Most regular-sized JSON files are supported. For large files over 5MB, browser performance may degrade. If you encounter performance issues, consider splitting large files into smaller ones for separate processing.
Can formatted JSON be used directly?
Yes. Formatted JSON fully complies with standard specifications and can be used directly in programs. Formatting only adds whitespace characters and does not affect JSON parsing or usage.

References

Technical standards and official documentation related to this tool.