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JSON Formatter & Validator

Format, beautify, minify, and validate JSON data online. Supports syntax checking and custom indentation. Gratuito, sem cadastro.

What is JSON Formatter?

JSON (JavaScript Object Notation) is a lightweight data-interchange format. This JSON formatter tool helps you format, beautify, minify, and validate JSON data. Simply paste your JSON, click Format, and get a clean, readable output. Perfect for debugging API responses, config files, and data processing.

Features

  • Format & beautify JSON with custom indentation (2, 4, or 8 spaces)
  • Minify JSON for production use
  • Validate JSON syntax with detailed error messages
  • 100% client-side processing — your data never leaves your browser

Frequently Asked Questions

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How to Use

  1. Paste your JSON data into the input field on the left
  2. Choose your preferred indentation (2, 4, or 8 spaces)
  3. Click 'Format / Beautify' for readable output, or 'Minify' for compact output
  4. Copy the result using the copy button

Common Use Cases

  • Debugging API responses and payloads
  • Formatting configuration files (package.json, tsconfig.json)
  • Validating JSON data before processing
  • Minifying JSON for production use

Frequently Asked Questions

What is JSON formatting?
JSON formatting is the process of adding proper indentation, line breaks, and spacing to JSON data to make it more readable. It doesn't change the data itself, just its visual presentation.
Is this JSON formatter safe to use?
Yes, 100% safe. All processing happens directly in your browser. Your JSON data is never sent to any server or stored anywhere.
Can I validate JSON with this tool?
Yes. Click the Validate button to check if your JSON is syntactically correct. The tool will show detailed error messages if any issues are found.