Beautify HTML, CSS and JavaScript — re-indent and add line breaks to make messy or minified code readable.

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About Code Formatter

The Code Formatter beautifies HTML, CSS and JavaScript: it re-indents nested structures, restores line breaks and spaces things out consistently, turning minified or messy code back into something you can actually read and review.

Paste code directly or upload an .html, .css or .js file, pick the language, and format with one click. The output pane reports the resulting line count and size, and the beautified code can be copied to the clipboard or downloaded as a file.

It is the natural companion to the minifier — use it to unminify a production bundle you need to debug, tidy generated markup, or normalize indentation before a code review. File uploads are processed on the server and cleaned up automatically.

How to use Code Formatter

  1. Select the language: HTML, CSS or JavaScript.
  2. Paste the messy or minified code, or upload the file instead.
  3. Click Format.
  4. Copy the beautified result or download it as a file.

Frequently asked questions

Yes — formatting HTML, CSS and JavaScript is free and unlimited, no sign-up needed.

Yes. The formatter restores line breaks and indentation, expanding one-line minified CSS or JavaScript into properly nested, reviewable code. Note that it cannot restore variable names removed by an aggressive minifier.

No. Only whitespace, indentation and line breaks are adjusted — tokens, strings and logic pass through untouched, so the formatted file behaves identically to the original.

Yes. Switch to Upload file and drop in an HTML, CSS or JS file up to the size limit shown on the page. Uploads are processed for the formatting pass and cleaned up automatically.

HTML (including embedded markup), CSS and JavaScript. For JSON, use the dedicated JSON Formatter, which adds validation and error locations on top of pretty-printing.


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