Does it change behaviour?

No. Beautifying only reformats source; it never alters what your code does.

Yes. The Babel parser handles JSX and modern JavaScript features.

JavaScript beautifier & formatter

Paste JavaScript to reindent it with consistent style, spacing, and line breaks using Prettier's Babel parser — all in your browser.

Loading tool…

What the JS beautifier does

It parses your code with Prettier's Babel parser and reprints it with consistent indentation, quotes, and spacing so minified or tangled code becomes readable.

Why beautify JavaScript

Reading minified bundles or inconsistent code is slow and error-prone. Beautifying restores structure so you can understand and debug it.

Modern syntax support

It understands modern ES syntax and JSX, so arrow functions, template literals, and destructuring all format correctly.

How to javascript beautifier

Paste your JavaScript into the input pane.
Click Convert to beautify it.
Copy the formatted code or download it as a .js file.

Related converters

JavaScript MinifierCompress JS with Terser — mangle and squeeze in your browser.CSS BeautifierReformat CSS with clean indentation using Prettier.HTML BeautifierReindent messy HTML into clean, readable markup with Prettier.