Free Online JSON Formatter - Beautify, Validate & Convert

The fastest, most secure JSON formatting tool online. Beautify, validate, and convert JSON instantly with syntax highlighting. 100% browser-based - your data never leaves your computer.

Input JSON

Characters
0
Lines
0
Size
0 KB
Objects
0
Arrays
0
Properties
0

Formatted JSON

Features
How to Use
About JSON

Features

JSON Beautifier

Automatically format and indent your JSON data with proper structure and readability.

JSON Validator

Validate your JSON syntax and highlight errors with detailed error messages.

JSON Minifier

Compress your JSON by removing all unnecessary whitespace to reduce file size.

Syntax Highlighting

Color-coded JSON output for better readability and understanding of your data structure.

Secure Processing

All processing happens in your browser - your data never leaves your computer.

Completely Free

No registration required, no hidden fees, and no limits on usage.

Advanced Statistics

Get detailed insights about your JSON including character count, size, and depth level.

Download Options

Save your formatted JSON directly to a file with one click.

Format Conversion

Convert JSON to other formats like XML, CSV, and URL query strings.

How to Use Our JSON Formatter

  1. Paste your JSON data into the input box on the left
  2. Click the "Format" button to beautify your JSON with proper indentation
  3. Click "Minify" to compress your JSON by removing whitespace
  4. Use the "Copy" button to copy the formatted JSON to your clipboard
  5. Click "Download" to save the JSON to your computer
  6. Use "Validate" to check your JSON for syntax errors
  7. If your JSON is invalid, you'll see an error message with details

Keyboard Shortcuts

  • Ctrl+Space: Auto-complete for common JSON structures
  • Ctrl+Enter: Format the JSON
  • Ctrl+Shift+M: Minify the JSON
  • Ctrl+Shift+C: Copy to clipboard

What is JSON?

JSON (JavaScript Object Notation) is a lightweight data-interchange format that's easy for humans to read and write and easy for machines to parse and generate. It is widely used for transmitting data in web applications (e.g., sending some data from the server to the client, so it can be displayed on a web page).

JSON Standards

JSON follows these basic standards:

  • Data is in name/value pairs
  • Data is separated by commas
  • Curly braces hold objects
  • Square brackets hold arrays
  • Strings must be in double quotes

Frequently Asked Questions

Is this JSON formatter free to use?

Yes, our JSON formatter is completely free with no registration required. You can format, validate, and convert JSON without any limitations.

Is my data secure when using this JSON formatter?

Absolutely! All processing happens in your browser - your JSON data never leaves your computer, ensuring complete privacy and security.

What features does this JSON formatter offer?

Our tool provides JSON beautification, minification, validation, syntax highlighting, conversion to XML/CSV, tree view visualization, and detailed statistics about your JSON data.

Can I format minified JSON with this tool?

Yes, simply paste your minified JSON into the input area and click 'Format JSON' to beautify it with proper indentation and structure.