Source Code Formatter & Beautifier is a lightweight browser extension developed by Downloadhub. It serves as a JavaScript, CSS, and HTML beautifier, allowing users to easily format and beautify code directly in their browser. This free extension is available on the Chrome platform and falls under the category of Browsers, specifically Add-ons & Tools.

The extension provides a user-friendly interface that supports multiple input languages. Users can either browse files using the (+) button located at the top-left corner of the UI or simply drag and drop a file into the left textarea. The former method is preferred as the coding language of the input file can be automatically detected, resulting in an updated interface without the need for manual adjustments.

Some notable features of Source Code Formatter & Beautifier include a stand-alone popup window when the UI is closed, ensuring no background activities. Additionally, it is purely web-based, capable of beautifying HTML, CSS, and JavaScript code. The extension also offers various interface-based adjustment options, giving users flexibility in customizing their code formatting experience.