Free JSON Formatter & Validator

Free JSON Formatter & Validator

JSON Formatter & Validator — Pretty Print Your JSON

Paste messy or minified JSON and get it formatted, validated and beautified instantly. Our free JSON formatter checks your syntax, highlights errors with line numbers, and can also minify (compress) your JSON for production use.

Paste JSON above, then press Format.

This tool runs entirely in your browser. Your data never leaves your device.

Popular JSON tasks

  • Format minified API responses into readable JSON
  • Validate JSON from a config file and find syntax errors
  • Minify JSON before pasting it into code or a request body

More free tools are on the way — suggest a tool you'd like to see next.


 

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