Hi Gina, if I understand correctly, the printout should match the label size, but Firefox is either doing an extreme reduction of the content (like scaling it down to 33% of the correct size but retaining the correct aspect ratio) or Firefox thinks your printer has some other kind of paper in it. Could you check some settings under the covers: (1) In a new tab, type or paste '''about:config''' in the address bar and press Enter/Return. Click the button accepting the risk. (2) In the search box in the page, type or paste '''scaling''' and pause while the list is filtered Each printer should have a '''print_scaling''' value of '''1''' (or possibly '''1.00''') to print at 100%. That actually is in effect only if "Shrink to fit" is disabled.... (3) In the search box in the page, type or paste '''shrink''' and pause while the list is filtered Each printer should have a '''print_shrink_to_fit''' value of '''true'''. How does that all look so far? (4) In the search box in the page, type or paste '''paper_data''' and pause while the list is filtered I don't know the correct number for your paper size on your printer. Typically * 1 = Letter * 9 = A4 but I think I would need to install DYMO software to see Firefox reads the label data and saves that.