Originally Posted by mikelv
...The main reason why I thought it would be a good idea to create the ePub-reader as an Firefox addon is, that an ePub-file is basically an archive of HTML-files. So why not use a program which is specialized in displaying HTML-files and many people have already installed? The great benefit is, that in that way you don't have to bother with rendering and display of the HTML-files because Firefox does this for you. So the limit of what is possible to display is set by Firefox and not by a special ePub-software. And I think Firefox is always at the cutting edge
Originally Posted by Steve Jordan
... The text opened a bit on the small side for my preferences, but using Firefox’s Zoom function increased the font size comfortably...
Firefox's Zoom function works great with this add-on.
Just Ctrl + + + or
Ctrl - - - to get the perfect size; rendering 'on the fly' and reflowing as expected. I can see what you meant now by letting the browser do what it was made to do.