Developer Tools

JavaScript Formatter

Paste JavaScript into the editor, format it instantly, and copy or download the cleaned output. This page is useful for debugging scripts, reviewing snippets, and cleaning compressed code.

Format JavaScript Online

Format JavaScript online with readable indentation, copy, download, and sample input support.

Why Use This JavaScript Formatter

Make markup and structured text easier to read
Copy cleaned output for debugging and editing
Use sample input for quick testing
Download the formatted output as a file

Related Developer Tools

Developer Tools Hub
XML Formatter
JSON Formatter
YAML Formatter
HTML Formatter
CSS Formatter
SQL Formatter & Beautifier

Frequently Asked Questions

How do I format JavaScript?

Paste your JavaScript into the input box, run the formatter, and copy or download the formatted JavaScript output.

Can this JavaScript formatter clean single-line code?

Yes. It reformats dense JavaScript into a more readable structure with indentation.

Is this JavaScript formatter free?

Yes. It is free to use in your browser.