Good alternative to Thumbnail Zoom, but it doesn't work everywhere.

I just would like an option to set the zoom to a desired resolution, for exemple 1600px².

Used to work on twitch clip links, but was broken a couple weeks ago and has yet to be fixed

this should be one of the best add-ons but there is no way for you to disable or enable by pressing a button (ctr, alt ...). Even i have saved the option after changing.

add-on is (as i found so far) the best for firefox. but, i have problem/or i do not understand - when i stay with mouse on image (and i do not know it's real size), it is shown yellow spinning circle (somekind of propeler), and it stays so for a eternity. not shown picture, not shown some error or information ("this picture is too big", or something similar).
is that bug, feature or i didn't settid it right?

c"est efficace

It will be awesome if you add a download option for the zoomed image ,great job thank you