You could (if you have access to php.ini) reduce the UPLOAD_MAX_FILESIZE but this is then valid for all uploads, not only for pics in a gallery.
But you should first look for a possible setting in the gallery module you are using.
koralex90 wrote:
I tried using myalbum but the thumbnails all changed to distorted colors
Basco wrote:
Surely it is a right!
But when it is used to abuse a system it isn't a right anymore.