Online JSON Formatter, Beautifier & Validator

Format, beautify, minify, and validate JSON data instantly. Free, private, works offline.

Input JSON
Paste your JSON here
Output

How the JSON Formatter Works

The SimpleTaskTools JSON Formatter is a free online tool for formatting, minifying, and validating JSON data. Whether you are debugging an API response, cleaning up configuration files, or preparing data for documentation, our formatter makes JSON easy to read and work with.

Format JSON

Transform compact JSON into a readable, indented format. Choose between 2 spaces, 4 spaces, or tabs for indentation. Properly formatted JSON is easier to read, debug, and understand.

Minify JSON

Remove all unnecessary whitespace from JSON to reduce file size. Minified JSON is perfect for production environments where bandwidth and storage matter.

Validate JSON

Check if your JSON syntax is correct. The validator will identify syntax errors and show you exactly where the problem is, making it easy to fix malformed JSON.

Privacy First

All JSON processing happens locally in your browser. Your data never leaves your device, making this tool safe for sensitive configuration files and API responses.

Frequently Asked Questions

JSON formatting (also called JSON beautification) adds proper indentation and line breaks to make JSON data human-readable. This is essential for debugging API responses, editing configuration files, and understanding data structures. Our tool formats JSON instantly in your browser.

JSON minification removes all unnecessary whitespace, including spaces, tabs, and line breaks. This can reduce file size by 20-40% depending on the original formatting. Minified JSON is ideal for production APIs and storage optimization while remaining fully valid.

Our JSON validator detects all syntax errors including missing commas, unmatched brackets, invalid property names, incorrect string escaping, trailing commas, and malformed values. The error message shows exactly where the problem is located.

Yes, completely safe. All JSON processing happens 100% locally in your browser. Your data is never sent to any server, logged, or stored anywhere. This makes our tool ideal for formatting API keys, tokens, and confidential configuration data.

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