A JSON formatter is an online tool that automatically formats and beautifies JSON data with proper indentation, making it readable and easier to debug. It validates JSON syntax and highlights errors in real-time.
How to Format JSON Online
1
Paste Your JSON
Copy your JSON data and paste it into the input field on the left.
2
Click Format or Validate
Click the "Format" button to beautify your JSON, or "Validate" to check for syntax errors.
3
Copy the Result
The formatted JSON appears in the output field. Click "Copy" to copy it to your clipboard.
Frequently Asked Questions
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is commonly used for transmitting data between a server and web application.
Why should I format JSON?
Formatting JSON makes it easier to read and debug. Properly indented JSON helps you quickly identify the structure of your data, spot missing brackets or commas, and understand nested objects and arrays.
Is my data safe when using this tool?
Yes, absolutely. All processing happens directly in your browser. Your data is never sent to any server, stored, or transmitted anywhere. The tool works entirely offline once loaded.
What is the difference between formatting and minifying JSON?
Formatting adds whitespace and indentation to make JSON human-readable. Minifying removes all unnecessary whitespace to reduce file size, which is useful for production environments where bandwidth matters.