I didn't say anything about it's label [name] in the bitmap gallery egg - i was taliking about it's size, and the jpeg size is uncompresed, just like png and webp, that was my point in answer to:

However if I open a new page and import jpg.jpg it reports a file size of 143Kb which I'd expect.
But when I import webp.webp I'm informed it would be better imported as a jpg, which I ignore. The Bitmap gallery reports it as 7Mb !!!
when I re-import a jpeg [that I saved compressed] it gets imported uncompressed; they all do

I see no sense in converting jpeg to webp as I've said; xara may not have got round to looking at this aspect, or they may just think most of their clients will still prefer to work in jpeg format