Rated 5 out of 5 stars

The new "Image Zoom" for sure! I find Image Tweak to be really a lot more convenient than said other extension (that has some memory leak and appears to be abandoned as well). While it takes just a little getting used to, it is simply great at what it does.

This review is for a previous version of the add-on (0.24.1.1-signed.1-signed).