Stacker is a free Chrome extension developed by asperspecunity. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools subcategory. With Stacker, users can easily visualize the markup structure of web pages.

This extension adds a unique perspective to web pages by pushing every element up, allowing users to clearly see how the page is structured. By doing so, Stacker provides a helpful visual representation of the underlying markup. While the effectiveness of this trick may vary depending on the complexity of the page, it can be particularly useful for designers, developers, and anyone interested in understanding the structure of a webpage.

Using Stacker is simple and straightforward. Once installed, the extension seamlessly integrates into the Chrome browser, providing users with an instant visual representation of the page's structure. Whether you're analyzing a complex layout or simply curious about how a webpage is organized, Stacker offers a convenient solution for visualizing the markup structure.

Please note that Stacker is only compatible with the Chrome browser. It is a free extension, making it accessible to a wide range of users. Give Stacker a try and gain a new perspective on web page structure.