[axelMI]

oh, in that case it's enough to go in the crop section, select "pic" to keep the current "picture" aspect ratio and resize the crop box

[munksbeer]

Apologies, by dimensions, I did mean aspect ratio. All I mean is keep the same image, but reduce the number of pixels, and lose some clarity, to reduce the size of the file.

Your suggestion above doesn't work. Try it. It keeps the picture aspect ratio, but it crops the picture. I don't want to crop it, I want to shrink the number of pixels but keep the same image (with loss of clarity because reducing pixels).

[axelMI]

Mhh. Maybe if you can show me an editor/app that does what you require will help me figure out how it works and replicate it