Does the software I'm looking for on linux just not exist, or is it because linux can't do the specific thing that the software I have on Windows can?

So, this is a really niche case, so I could see it go either way. I work with screenshots a LOT for my job. Specifically, taking screenshots where the scroll bar on Firefox can be automatically scrolled down by the software so it can capture the entire web page, and then stitching that all together into a single smooth image.

There are two or three pieces of software that can do this on Windows (FastStone Capture is my favorite, but ShareX also does this), but on Linux I cannot for the life of me find a piece of software that can autoscroll and screen capture, then stitch those captures together into a larger image. It got me wondering, is it something that linux simply can't do, or is it just that no one has created software to do that specific thing for linux?