Is my JSON data safe?

Absolutely. All formatting and validation happens directly in your browser. Your JSON data is never uploaded to any server, ensuring complete privacy.

What does this tool do?

This tool formats (beautifies) JSON to make it readable, validates JSON syntax, detects errors, and can also minify JSON to reduce size. It supports customizable indentation.

Can I minify JSON with this tool?

Yes, click the Minify button to compress your JSON by removing all whitespace. This is useful for reducing file size in production.

What indentation options are available?

You can choose between 2 spaces, 4 spaces, or tabs for indentation. The default is 2 spaces.

JSON Formatter

Input JSON

1 lines

Indent:

Output

About JSON Formatter

Our free online JSON Formatter helps developers format, beautify, validate, and minify JSON data instantly. Whether you're debugging API responses, cleaning up configuration files, or preparing data for documentation, this tool makes working with JSON effortless.

JSON (JavaScript Object Notation) is the most popular data interchange format used in web APIs, configuration files, and data storage. Properly formatted JSON is essential for readability, debugging, and maintenance. Our formatter handles everything from simple objects to deeply nested structures with thousands of lines.

Features

Format & Beautify

Transform minified JSON into readable, indented format with customizable spacing.

Validate JSON

Instantly detect syntax errors with precise line and column numbers.

Minify JSON

Compress JSON by removing all whitespace for smaller file sizes.

100% Private

All processing happens in your browser. Your data never leaves your device.

Frequently Asked Questions

Is this JSON formatter free?

Yes, completely free with no usage limits, no signup required, and no ads interrupting your workflow.

Is my JSON data secure?

Absolutely. All formatting and validation happens directly in your browser using JavaScript. Your data is never sent to any server.

What's the difference between Format and Minify?

Format adds indentation and line breaks for readability. Minify removes all whitespace to reduce file size—useful for production APIs and storage.

Why is my JSON showing as invalid?

Common issues include trailing commas, missing quotes around keys, single quotes instead of double quotes, or unescaped special characters. Check the error message for the exact line and column.

Can I format large JSON files?

Yes, the tool handles large JSON files efficiently since all processing runs locally in your browser.

Developed byMadMVP

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