open any non restricted websites and click the toolbar button to take a snapshot. NOTE: when a site exceeds a certain size, the result will be a CBZ (comic book archive, aka. a ZIP file which contains a set of images. This was the most reliable workaround to ensure to always get a full website snapshot. Most other addons use the browsers built-in canvas API which is hard limited in how large an in memory image can be. This addon doenst care about that limit.