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Developer Tools

JSON Formatter & Validator

Format, validate, and minify JSON in your browser with precise error locations and adjustable indentation.

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Privacy Notice: All files and input data are processed 100% locally inside your browser. No files are uploaded to our servers.

How to Use:

  1. Paste or type your JSON into the input box.
  2. Click Format to beautify it, or Minify to compress it onto one line.
  3. Choose 2 spaces, 4 spaces, or tabs for indentation.

Key Features:

  • Validates JSON and points to the exact line and column of any error
  • Format (beautify) or minify with one click
  • 2-space, 4-space, or tab indentation
  • Copy or download the result, all processed locally in your browser