Free JSON Formatter Online — Format, validate, and minify JSON instantly
JSON Formatter FAQ
How do I format JSON?
Paste your JSON in the input box and click "Format / Beautify". The tool will pretty-print it with 2-space indentation.
Does this validate JSON?
Yes, if your JSON is invalid, the tool will show the exact error message so you can fix it.
Can I minify JSON?
Yes, click the "Minify" button to remove all whitespace and compress your JSON to a single line.
Is my data safe?
Yes, everything runs in your browser. No data is sent to any server.
How to Use Our JSON Formatter & Validator
Paste your raw JSON data and instantly format it with proper indentation, or validate it to find syntax errors. The tool highlights errors with clear messages so you can quickly fix malformed JSON.
Essential for developers working with APIs, configuration files, or any JSON data. Whether you're debugging an API response or cleaning up a config file, this tool makes JSON readable in one click.
Why Use Our JSON Formatter?
It's free, runs entirely in your browser, and handles large JSON files instantly. No data is sent to any server, making it safe for sensitive API responses and credentials.
What does JSON validation check?
The validator checks for proper syntax including matching brackets, correct comma placement, valid string escaping, and proper data types. It pinpoints the exact location of any errors.
Can I minify JSON with this tool?
Yes. In addition to pretty-printing with indentation, you can minify JSON to remove all whitespace — useful for reducing payload size in API requests and configuration files.
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