JSON Formatter

Format, validate, and beautify your JSON data

Format & Validate

Automatically format and validate your JSON with customizable indentation.

Minify JSON

Remove all unnecessary whitespace to reduce JSON file size.

Import & Export

Upload JSON files or download your formatted JSON data.

Frequently Asked Questions

Can this tool validate JSON syntax?

Yes, the formatter validates your JSON and highlights any syntax errors with line numbers and descriptions.

Is there a size limit for JSON input?

Processing happens in your browser, so it can handle large JSON files. Files up to several megabytes work well.

Can I minify JSON as well?

Yes, you can both beautify (format) and minify JSON to reduce file size for production use.

Does the JSON formatter work offline?

Yes, all formatting and validation happens entirely in your browser using JavaScript. Your JSON data is never sent to a server, making it safe for sensitive or proprietary data.

What indent sizes are supported for JSON formatting?

You can choose between 2 spaces, 4 spaces, or 8 spaces for indentation. Two spaces is the most common convention in web development, while 4 spaces is popular in languages like Python and Java configuration files.