Despite me having set the minimum size and check off to use the setting it drops to 30 bytes on random sites. Basically, it does not honor the low limit in like 30-40% cases. And no, I do not have "disable on new tab" set. Imagine when you cannot reload a page but need images to load, like during a quiz!
Also, the Control/Shift-click+mouseover to load feature has never worked for me, not even once, for many years and versions of browsers and this addon. Not sure why the dev advertises it when it does not work. Should make something more robust like right-click menu or hotkey.
I am very happy that overall this reduces my network traffic like 50% but the above shortcomings are annoying.

Update after 2 years: The shift-mouse over image loading finally began to work, but the 30-byte minimum still occurs on great number of random sites. The developer clearly does not make any effort to address this. The limit per site is also a very important missing feature. Is it too hard to save the setting in a SQLite DB? Huh?

Very useful for saving internet data. Please, add an option to be able to disable/enable the addon globally from the addon icon. Currently if you want to disable the functionality of the addon (globally), you must do so from Firefox extensions settings.

Its not a good job. Not perfect works. Don't show this extension anymore while another competitors are working better. Some product may need verily yet not perfect, then minimum work will accepted. But with others working completely, its disturb users and causes annoying.

probably hover to show full image not working with image on anchore link. could you check this on facebook.com please?

제가 찾는 바로 그 앱입니다. 좋아요!!

Absolutely amazing!! Due to the "tune" feature, some images can be loaded but in the compressed version, this let you see all images (and memes) even in with connectivity issues xD

Awesome!!