Fred, try the Dkit Image Compress and Resize app (search the App Store). Works great for me and my iPad. You can hit its camera image at the head of its list of your album contents, and take an iPad photo that’ll directly then load into the app for processing. Or you can choose any other existing album photo to change.
I usually just knock the original kilobytes down by simply moving the slider back to about 30%. That usually gets the resolution under the 300kb maximum limit prescribed by this Forum for posting pix. The app is relatively unique in that it actually tells you the original data load (kilobytes or megabytes) and the resulting data load of your slider use. So if 30% isn’t enough or is too much, I can go back one page and move the slider accordingly. My only gripe is I wish the slider was on the same page as the kB count.
I searched a lot of apps before finding this one. Like most, there’s a learning curve, but it’s not encumbered with a lot of features I’d never use, and is focused on simply and easily changing the image size. Just remember to hit the “Save” button afterward. It keeps both the original and modified image versions in your album(s), side by side. So you need to delete the original or remember which one is the most recent addition; that I know of, iPad’s album doesn’t as yet allow naming pix to tell them apart.
Joel