Crosserville Toolkit Extension is a free Chrome add-on developed by sdbrody. It falls under the category of Browsers and the subcategory of Add-ons & Tools. This extension provides extra tools for grid construction on Crosserville.com, allowing users to enhance their grid-building experience.

The current toolset offered by Crosserville Toolkit Extension includes the ability to flip the grid horizontally, vertically, and diagonally, as well as rotate the grid. Users can also flip the contents of across or down slots with ease. Additionally, the extension provides buttons in the Fill pane for accepting fill for single-option cells and accepting a single slot in the suggested fill.

With its range of features, Crosserville Toolkit Extension offers a valuable toolset for grid construction on Crosserville.com, enhancing the user experience and providing additional options for customization.