JSON Formatter

Format, beautify, and validate your JSON data with proper indentation. Supports syntax highlighting, folding, and search.

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JSON Input
Formatted Output

What is JSON Formatting?

JSON formatting (also known as JSON beautifying or pretty-printing) is the process of adding proper indentation, line breaks, and spacing to JSON data to make it more readable. Minified JSON is compact but hard to read, while formatted JSON is easier to understand and debug.

How to Use This Tool

  1. Paste your JSON data into the input field on the left
  2. The tool automatically formats and validates your JSON
  3. View the formatted output on the right side
  4. Click "Copy" to copy the formatted JSON to your clipboard
  5. Adjust indentation settings as needed (2 or 4 spaces)

Features

  • Syntax Highlighting - Color-coded JSON for easy reading
  • Code Folding - Collapse/expand objects and arrays
  • Search - Find text within your JSON (Ctrl/Cmd+F)
  • Line Numbers - Navigate large JSON files easily
  • Instant Validation - Detects JSON errors in real-time
  • Browser-Based - Your data never leaves your device

Common JSON Errors

If your JSON is invalid, our formatter will detect common errors such as:

  • Missing or extra commas
  • Unquoted property names
  • Single quotes instead of double quotes
  • Trailing commas after the last element
  • Missing brackets or braces

Need to fix invalid JSON? Try our JSON Fixer tool.

FAQ

What is a JSON Formatter?

A JSON Formatter (also called a JSON Beautifier) adds proper indentation, line breaks, and spacing to compact JSON data, making it much easier to read and debug.

Is the JSON Formatter free to use?

Yes, completely free. No sign-up, no account, and no limits on how much JSON you can format.

Is my JSON data safe?

Yes. All processing runs entirely in your browser. Your JSON never leaves your device or gets sent to any server.

What should I do if my JSON shows an error?

The formatter highlights the exact line with the error. Common issues include trailing commas, single quotes instead of double quotes, and unquoted keys. You can use the JSON Fixer to automatically repair most of these errors.

Can I change the indentation size?

Yes. You can switch between 2-space and 4-space indentation using the options in the toolbar.

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