JSON Tools

JSON Formatter & Beautifier Online

Format and beautify your JSON data instantly with our free online tool. Customize indentation, sort keys, and validate JSON syntax in real-time.

Input JSON

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Ready 0 bytes

Prettified JSON

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No output 0 bytes

Why Use Our JSON Formatter?

Our JSON formatter provides developers with a fast, reliable way to beautify and format JSON data. Whether you're debugging API responses, working with configuration files, or cleaning up JSON for documentation, our tool makes JSON data human-readable and easy to understand. With support for custom indentation styles and key sorting, you get complete control over your JSON formatting preferences.

Key Features

Flexible Indentation Options

Choose between 2, 4, or 8 spaces, or use tabs for indentation. Match your project's coding standards effortlessly.

Alphabetical Key Sorting

Automatically sort object keys alphabetically to make JSON objects more organized and easier to compare.

Real-Time Validation

Validate JSON syntax as you type. Get instant feedback on errors with clear, actionable error messages.

File Support

Upload JSON files by clicking or using drag-and-drop. Download formatted results with one click.

Common Use Cases

  • API Development: Format API responses for better readability during testing and debugging
  • Configuration Files: Clean up package.json, tsconfig.json, and other configuration files
  • Data Analysis: Make large JSON datasets more readable for analysis and review
  • Documentation: Prepare well-formatted JSON examples for technical documentation
  • Code Reviews: Present JSON data in a clean, consistent format for team reviews
  • Database Exports: Format JSON exports from databases like MongoDB or Firebase

How to Format JSON Online

  1. Paste or Upload: Copy your minified or unformatted JSON into the input area, or drag and drop a .json file
  2. Customize Settings: Select your preferred indentation size (2, 4, or 8 spaces, or tabs)
  3. Optional Sorting: Enable "Sort Keys" to alphabetically organize object properties
  4. Click Format: Press the "Prettify JSON" button or use Ctrl+Enter keyboard shortcut
  5. Review Output: Check the formatted JSON in the output panel with syntax highlighting
  6. Copy or Download: Use the copy button or download the formatted JSON file

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