a little assistance? (blinkies)

Hello! I have made some blinkies, however I cannot add them to my profile. I have tried the code, however when I insert them, it shows the little blank image icon. Can someone help me make these usable? Here are the links to the blinkies.

https://imgur.com/a/8YRXcLz

https://imgur.com/a/xG1Up7s

https://imgur.com/a/kib3zGW

https://imgur.com/a/Bb8tPKM

thank youuu!!!