Simplify Mastodon is a Chrome add-on developed by Michael Leggett. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This free program aims to enhance the user experience on Mastodon, a decentralized social media platform.

The add-on provides several features to simplify the Mastodon interface. It centers the content by putting posts into cards with space between them, dimming actions until hover, and hiding the title bar on scroll. The left and right columns are placed at the edge of the window, giving a more streamlined appearance.

Simplify Mastodon also reorganizes the compose and search functions, placing them on the right side and minimizing them to an icon unless in use. The navigation menu is shifted to the left and is minimized to icons, which expand when hovered over. Additionally, it hides certain elements such as trends and navigation items that the developer deems unnecessary, including Local, Federated, Favorites, Bookmarks, and Lists. There may be plans to add an option to expand or customize this feature in the future.

However, it is important to note some limitations of Simplify Mastodon. It currently only works on approximately 300 Mastodon servers and may not be compatible with all domains. The add-on does not have any functionality in the multiple column view, also known as the Advanced Web View. Furthermore, if the window width is less than 1175px, where the UI shifts, Simplify Mastodon does not offer any features.

Overall, Simplify Mastodon is a free Chrome add-on that aims to simplify the Mastodon experience by reorganizing and streamlining the interface. While it may have limitations in terms of server compatibility and UI responsiveness, it offers a convenient way for users to customize their Mastodon browsing experience.