On our site I can change the size of some jpegs, but others refuse to be changed. I can alter the size on the site editor, and they will stay that size, but when published they have not changed size.
Well Bernadette, I think I may have solved this. There seemed to be glitch which meant that the picture box was not properly displayed. I deleted it and its picture (having saved a copy of the pic elsewhere) and reinstalled and published it and all is fine!
Can you post a link to the page that has the image you are having problems with? Thanks so much!