DOM Skeleton is a free Chrome add-on developed by roan. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. With just a single click, DOM Skeleton allows users to see the DOM skeleton of any webpage.

This handy tool adds CSS to the page, which results in an outline being added to all DOM elements. By doing so, it provides a visual representation of the structure of the webpage. This can be particularly useful for web developers and designers who need to understand the layout and hierarchy of elements on a page.

DOM Skeleton's simplicity and accessibility make it a valuable tool for anyone working with web development or design. With its ability to quickly outline all elements on a page, it aids in better understanding and analyzing the structure of webpages.