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JavaScript Formatter

Format JavaScript without executing it.

â—‡ Browser only
0 lines · 0 characters
Ready when you are
Your results will appear here.
Copy or download your result below.

Your text stays on this device.

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LESS BUSYWORK, MORE DONE

Three steps. That’s it.

A useful toolkit for text, data, images and calculations.

  1. 01

    Add your input

    Choose a tool, enter values or select a file.

  2. 02

    Make it yours

    Adjust the options and run the action.

  3. 03

    Take the result

    Copy the result or download its file.

JavaScript pretty printer online

Inspect dense JavaScript source without executing it. Formatting does not run the code or establish that its behavior is safe.

How to use it

Enter the source input or select Try example. Review the displayed input. Select Run tool and inspect the result before copying or downloading.

Worked examples

Inspect dense JavaScript source without executing it.

Worked example — JavaScript Formatter

Settings: No additional options

Input:

function greet(name){return "Hello "+name;}

Output:

function greet(name) {
  return "Hello " + name;
}

The example output has 3 lines. Compare its order, separators and whitespace with the input before copying the result.

Limitations and common mistakes

  • Formatting does not run the code or establish that its behavior is safe.

Frequently asked questions

How can I prettify JavaScript online?

Enter the source input or select Try example. Review the displayed input. Select Run tool and inspect the result before copying or downloading.

Where is my input processed?

The bundled tool processes input in your browser. It does not upload tool input to a conversion service. Other site plugins, analytics, advertising and browser extensions may have separate behavior.

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