Maybe there is some kind of add-on for Firefox, but I do not really know of any.
Universal Print. Just select the current tab, right-click on the "Next" link and select "Open in new tab"—27 times. Make sure the page scale is set so each page fits on a printed page. Then select
File - Universal Print - Print All Tabs.
Although the format is different, svenne's templates are a more practical solution. Note the latest version of the
HTML Print Layout template is only attached to his last post
here (the
Frames and
List templates are there as well). If some sort of thumbnail list format is essential, maybe svenne would consider creating one that will do that.