This add-on alters how Blender records actions when working in the Image Editor. Normally, toggling between render slots to compare images adds a "Context Set" entry to the undo history, which can quickly overwrite actual scene modifications. This tool allows users to switch between the first nine render slots using the 1 through 8 number keys without registering those actions in the undo stack. It requires no configuration, operating automatically whenever a Render Result is viewed in the Image Editor.