What is a JSON formatter?

A JSON formatter is a tool that takes raw or minified JSON data and reformats it with proper indentation and line breaks, making it easier to read and debug. It can also validate JSON syntax and report errors.

What is the difference between formatting and minifying JSON?

Formatting (beautifying) adds indentation and newlines to make JSON human-readable. Minifying removes all unnecessary whitespace to reduce file size, which is useful for production environments and API payloads.

How do I validate JSON?

Paste your JSON into the input box and click Format or Minify. If the JSON is invalid, the tool will display a detailed error message showing what went wrong and where the syntax error is located.

Does this tool support large JSON files?

Yes. Since all processing happens in your browser, the tool can handle large JSON files limited only by your device's memory. No data is sent to any server.

What indentation options are available?

You can choose between 2 spaces, 4 spaces, or 1 tab for indentation when formatting your JSON data.

JSON Formatter & Validator

Format, validate, and beautify JSON data instantly. Supports pretty-printing with customizable indentation and minification for production use.

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What Is JSON?

JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is the most common format for APIs, config files, and data storage on the web.