I have a form which allows up to 6 images to be uploaded to a directory on my server. My question is this, how can I let users of my site upload only optomized images which are at the most 800px X 800px. So that the form would not submit till all the images are uploadable and the user will be able to fix any uploaded image (if its 1200px X 1500px, lets say) and go back, fix the problem and try to submit the form again...
Is there a way to do tjhis?
