How do I format or beautify JSON?

Paste your JSON into the input area, choose an indentation size (2 spaces, 4 spaces, or Tab), and click Beautify. The tool parses your JSON and re-prints it with clean, consistent indentation so it is easy to read.

How do I minify JSON?

Click the Minify button to remove all unnecessary whitespace and line breaks. This produces the smallest valid representation of your JSON, which is ideal for reducing payload size in APIs and config files.

What happens when my JSON is invalid?

If the input cannot be parsed, the tool shows a red error message describing what went wrong. When possible, it also points to the line and column of the problem so you can locate and fix the syntax error quickly.

Is my JSON data private and secure?

Yes. All parsing, formatting, and validation happen entirely in your browser using JavaScript. Your JSON is never uploaded to any server or stored anywhere. Close the tab and your data is gone.

JSON Formatter

Beautify, minify, and validate JSON with clear error messages and one-click copy.

Indent:

Input

Output

How to Use

Clean up and validate your JSON in seconds.

Paste Your JSON

Type or paste raw JSON into the input area. Load the sample to see how it works.

Choose an Action

Pick an indent size, then Beautify to format, Minify to compress, or Validate to check syntax.

Copy or Download

Copy the result to your clipboard or download it as a .json file for reuse.

JSON Tips

Work with JSON like a pro.

Beautify for Reading

Use 2-space indentation for compact readability or 4 spaces for extra clarity when debugging deeply nested structures.

Minify for Production

Strip whitespace before shipping JSON in API responses or config bundles to reduce payload size and speed up transfers.

Watch Your Commas

Trailing commas and single quotes are the most common causes of invalid JSON. The validator points to the exact line and column.

Keys Need Quotes

Unlike JavaScript objects, every JSON key must be wrapped in double quotes. Booleans and null must be lowercase.