While using PagelistWidget, the scanned lower part of the page remains outside of the screen, which leads to wasting of time to drag every page. It would be more helpful if the scanned page remains within the height of the screen.
This should be resolved by just remembering the zoom and pan position (we used to remember the scroll position before). Trying to show the whole page (which is the default for Openseadragon) is going to make the text too small to read on smaller screens.
Agreed that it would be smaller than now, but that does not prevent indexing for majority of the pages. We just need to get a glimpse of what the page is about, whether it's a numbered page, a cover page, a blank page etc. We don't have to read the whole page to understand it. Fitting into screen will give us the whole idea about the page without scrolling down everytime. Also, it would take much lesser time to load than what is happening now. We don't have to zoom and pan all pages, but If we need to do that for some of the pages, you are going to install that feature anyway. So there is no conflict in this request with that.
Change 714193 had a related patch set uploaded (by Yash9265; author: Yash9265):
[mediawiki/extensions/ProofreadPage@master] Allowing to zooming out the image Adding the min zoom level and max zoom level which will help to zoom out and zoom in the image and also preserving the viewport for remembering the zoom and pan.