Rated 4 out of 5 stars

Really loving it, and the new feature that it now displays an image even if there is an album behind it (only showed sth on single images before).. The next useful thing would be an indicator, whether the hovered image belongs to an album and maybe the ability to scroll through the images with the arrow keys or sth?

This review is for a previous version of the add-on (2.4.1-signed).  This user has a previous review of this add-on.

When an imgur link is to a single picture the mouse icon over the thumbnail looks like an arrow followed by an equals sign and the Thumbnail Zoom Plus logo, indicating that the pop-up is identical to the thumb. When it's linked to an album the mouse is the regular simple arrow.

I agree that moving through albums would be nice; I may add that in the future.