Rated 3 out of 5 stars

I loved this app but had to disable it, it was causing my browser to lock up and crash. Before I disabled it windows task manager showed Memory (private working set) used by Firefox was over 600,000k+ and now after disabling this app Firefox only uses 346,000k. I am no longer having trouble with Firefox crashing now

This review is for a previous version of the add-on (3.3.1-signed). 

Hello, that's a Firefox bug which I think I worked around in Thumbnail Zoom Plus 3.3. Were you still having the problem in 3.3, or were you running an older version? You can reply to firefox.add.on@davidadler.name . Thanks.