JSON Formatter

JSON Formatter

Validate, format and minify JSON — all in your browser.








About the JSON Formatter


Our free JSON formatter validates, beautifies and minifies JSON in one click. Paste messy API responses or config files, hit Format for readable indented output, or Minify to strip whitespace for production. Invalid JSON gets a clear error message so you can fix syntax fast.


How to Use the JSON Formatter


    

  1. Paste your JSON into the input box.
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  2. Click Format to beautify with indentation, or Minify for compact output.
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  3. Use Copy Output to grab the result, or Clear to start over.
    4. 



Why Format JSON?


    

  • Debugging APIs: readable JSON makes it easy to spot wrong fields and nesting errors.
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  • Configuration files: validate package.json, tsconfig or app settings before deploying.
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  • Smaller payloads: minified JSON reduces bandwidth for APIs and data files.
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  • Learning: see exactly how nested objects and arrays are structured.
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Frequently Asked Questions


What is JSON?


JSON (JavaScript Object Notation) is a lightweight text format for storing and exchanging data, widely used by web APIs.


What happens with invalid JSON?


The tool shows an error instead of output, so you know the input needs fixing — common culprits are trailing commas and single quotes.


Is my data sent to a server?


No. Formatting and validation run entirely in your browser via the built-in JSON parser.


Format vs Minify — which should I choose?


Format for humans (readable, indented); Minify for machines (smallest size for production use).