Speaking for myself (and not representing FT in any 'official' capacity) this is something we (the volunteer moderators) inquired about recently. My understanding is that there is a current plug in that can be used with the site's software to reduce image size, but in evaluating it, the technical folks determined there were too many risks of degrading the site's performance if it were implemented, so that specific solution was declined. I don't think there's any other way of shrinking an image. I hope other solutions may present themselves. I personally like the addition of posting images, but we seem to be in agreement that sometimes large images can be problematic.