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JSON Formatter & Validator

Beautify, minify, and validate your JSON data instantly.

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Online JSON Formatter & Validator

JSON (JavaScript Object Notation) is the language of the web APIs. However, API responses are often returned as a single, messy line of text that is impossible to read. Our JSON Formatter beautifies your code instantly, making it readable and structured.

Key Features

  • Beautify / Prettify: Adds proper indentation and newlines to raw JSON data.
  • Minify: Removes whitespace to reduce file size for production use.
  • Validator: Instantly detects syntax errors (like missing commas or quotes) so you can fix them before deploying.

Why use a local formatter?

Many developers paste sensitive data (API keys, customer info) into online formatters. Unlike others, our tool processes data locally in your browser. Your JSON data is never sent to our servers, keeping your secrets safe.