Animated signatures

[Kekvit Irae]

10,240 bytes max.

Note: The maximum size of your custom image is 650 by 150 pixels or 50.0 KB (whichever is smaller). You can upload or link to an image of your own choice. You can also visit our gallery and download a picture to use it. Go to Settings/My Account/General Settings/ and scroll down to the Thread Display Options. There you can chooose whether you want to see avatars, profilepictures or both in userposts.

Those image rules for file size you quoted are VERY draconian. Your sig is over 200k. Mine is slightly less than 40k, and that's without making it look like crap due to heavy compression.
Regardless, there should be a special rule for Bronies and Fillies to allow a higher file size than heathens.