>>49857059open inspect tool from browser menu or keyboard shortcut (firefox is ctrl shift i), hover over where the image usually is, there should be something like picrel
copy it and paste into url bar
remove //
go off
you can practice on this well-timed emmet rkgk:
https://poipiku.com/4834248/6325109.htmli usually do it like this but i'm sure there's a proper tool for it somewhere, no idea if gallery-dl supports it yet