DEVELOPER TOOL

JSON Formatter & Validator

Format compact JSON into readable text or check JSON syntax. Processing happens locally in your browser.

JSON input

Output

What does a JSON formatter do?

JSON is a common data format used by APIs and web applications. This tool uses your browser's built-in JSON parser to validate the input and format it with indentation.

How to use

Paste valid JSON and choose Format JSON to make it easier to read. Choose Minify to remove unnecessary whitespace. If the input is invalid, the tool shows a parser error to help you troubleshoot.

Privacy note

The text is processed in your browser and is not uploaded to our server by this tool. Avoid sharing sensitive data on any public device.