Pierre, I'm sorry you had that trouble. That size should be OK, so long as you don't also set the JPEG conversion too high. I use Photoshop, and find that I can post photos that are about 1000 x 600, but only if I set the JPEG conversion to low quality rather than medium quality. I hope that helps - but if not I'm afraid that this will be my last look at my computer until 27 December.