What's the difference between formatting and minifying?

Formatting adds line breaks and indentation for readability. Minifying removes all unnecessary whitespace to make the file as small as possible, which is useful for production APIs.

Is my data sent to a server to be validated?

No. Parsing and formatting use your browser's built-in JSON engine, so your data never leaves the page.

JSON Formatter

Paste any JSON to format it into readable, indented text, minify it down to a single line, or validate it and get a clear explanation of any errors.

Input

Result

Everything you enter is processed in your browser and isn't sent to our servers.

How to use json formatter

1Paste your JSON into the input box.
2Click Format to prettify it, or Minify to compress it to one line.
3If the JSON is invalid, a clear error message points to the problem.
4Copy the result to your clipboard with one click.

About this tool

JSON is the standard format for exchanging data between APIs, config files and applications, but it's easy to introduce a stray comma or missing bracket. This tool checks your JSON and reformats it however you need.

Formatting adds consistent indentation so nested objects and arrays are easy to read, while minifying strips all unnecessary whitespace to produce the smallest possible payload. Validation happens entirely client-side using your browser's native JSON parser.

Frequently asked questions

The tool shows a plain-language description of the problem along with the line where the parser stopped, so you can find and fix the issue quickly.

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