JSON Formatter
Format, minify and validate JSON. All locally in your browser.
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JSON Formatter and Validator
Did you copy minified or messy JSON code from an API response? This tool will instantly beautify your JSON by formatting it with proper indentation. It simultaneously acts as a validator, reporting errors if a comma or quote is missing in the code.
Frequently asked questions (FAQ)
How does the validator find errors?
The tool uses the built-in JavaScript function JSON.parse(). If your code is not valid according to strict JSON standards, the tool will catch the error and clearly warn you that the structure is incorrect.
Do my API keys remain private?
Yes! As a tool for developers, we know JSON often contains sensitive API keys and user data. The processing is done 100% locally in your browser, and no data is sent to the server.
