Many of the Firefox screenshot extensions had/have a vertical limit of some thousands of pixels (yes, even when capturing the "full page"). Since this seemed c

Many of the Firefox screenshot extensions had/have a vertical limit of some thousands of pixels (yes, even when capturing the "full page"). Since this seemed common across several of them, I assumed -- without investigating -- that the underlying Firefox functionality imposed the limit. I don't know whether I was/am right, and whether that would apply to this. Something to investigate, if I don't forget.