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.