Rated 1 out of 5 stars

Why can't you simply have the image centred with a background of your choice and leave the default zoom options with Firefox?

I am aghast that you left this obvious feature out and decided on an over complicated design of your own. Could have been a great addon.

The zoom option with this addon does not operate with a laptop mouse. FAIL.

This review is for a previous version of the add-on (0.18.1). 

If you set enabled zoom types to "Full" and "1:1" in the options and you double-click on the image, it will behave exactly as firefox did. Beside, you can also use the keyboard keys 1 to 4 to achieve the same effect (read more about that in the online help) or you can use the +/- keys to zoom in or zoom out. I use it on my laptop every day and yet I prefer it over the firefox standard behaviour. Your choice, anyway.\r\nBest regards.