Thanks but I don't understand how that answers my problem. I had already read the thread you pointed me to but still don't understand why some images are the right size and others are not? If I am using the standard '&thumb=62c&full=782p' in index.php why do I need to alter the properties.php file? Sorry I think I must be missing the point. It's the fact that most are ok but four are not which I can't get. Thanks