Review for Thumbnail Zoom Plus by thebudman420
Rated 5 out of 5 stars
To all those missing this addon in firefox 57+ Imagus is a very good replacement. https://addons.mozilla.org/en-US/firefox/addon/imagus/
It may not be the best replacement for everyone but it works good and has some nice options and abilities this addon don't have.
I actually like Imagus more than this addon and it seems to be getting better all the time. There is also a support subreddit here https://www.reddit.com/r/imagus/
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