JSON Formatter and Validator

Format, validate, and beautify your JSON data with our free online tool. Features include customizable indentation, real-time validation, and syntax highlighting.

JSON Formatter & Validator

Features

Real-time Validation

Instantly validate your JSON as you type, with clear error messages and highlighting.

Customizable Formatting

Choose your preferred indentation style and size for perfectly formatted JSON.

Dark Mode Support

Easy on the eyes with both light and dark themes available.

One-Click Copy

Copy your formatted JSON to clipboard with a single click.

Frequently Asked Questions

What is a JSON formatter?

A JSON formatter is a tool that helps organize and structure JSON data in a readable format. It adds proper indentation, line breaks, and spacing to make the JSON easier to read and understand. Our formatter also validates the JSON syntax and highlights any errors.

How do I format JSON online?

  1. Paste your JSON data into the input field
  2. Click the "Format" button or use the keyboard shortcut
  3. The formatted JSON will appear in the output field with proper indentation
  4. You can customize the indentation size and style in the settings

Can I validate my JSON using this tool?

Yes, our JSON formatter automatically validates your JSON as you type or paste it. It will highlight syntax errors and show helpful error messages to help you fix any issues. The tool ensures your JSON is valid according to the official JSON specification.

Is this JSON formatter free to use?

Yes, our JSON formatter is completely free to use with no limitations. You can format and validate JSON as many times as you need, with no account required. The tool runs entirely in your browser, ensuring your data remains private.

What features does this JSON formatter offer?

  • Real-time validation and error detection
  • Customizable indentation (2, 4, 8 spaces)
  • Dark mode support
  • Copy formatted JSON with one click
  • Keyboard shortcuts
  • Line numbers and syntax highlighting
  • Large file support
  • Minification option

How to Use

  1. Input Your JSON: Paste your unformatted JSON into the input field on the left.
  2. Format: Click the "Format" button.
  3. Customize: Adjust the indentation size and style using the settings panel if needed.
  4. Copy or Download: Use the copy button to copy the formatted JSON to your clipboard.

The tool will automatically validate your JSON and highlight any syntax errors. Error messages will help you identify and fix issues in your JSON data.