Really enjoy this extension. This extension not only can help to make some web pages readable, it also allow you to remove information from pages that aren't relevant to printing. Also allows you to resize images, and remove others, so you're not wasting printer toner on things you don't need. While there are pages that prevent it's use, those pages also disallow Firefox printing. Unfortunately for some pages all you can do is use the "other" browser to print. Not the fault of the extension or Firefox, it's how some folks build webpages.