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). 

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.

Rated 4 out of 5 stars

Everything is great, but this change:
'Improved “Save Enlarged Image As“: the default filename is now based on the image’s caption text and illegal characters are automatically removed.'

When I'm browsing Reddit via RES the pictures will all be named 'drag to resize' now, because RES added that caption. The way before your addon just took the original filename. Could we please have an option to change it back to that? Thanks!

This review is for a previous version of the add-on (2.2.1-signed). 

Version 2.4 will have a preference for the default Save As filename to be either the caption, the web site's image filename, or both. I'll also try to have it get the proper caption when RES is used.