> This International Standard specifies a datastream and an associated file format, Portable Network Graphics (PNG, pronounced "ping"), for a lossless, portable, compressed individual computer graphics image transmitted across the Internet.
Also Facebook / imgur / giphy need to get their stuff sorted with linking and embedding clips. It seems totally random whether a direct link to a given video from imgur will embed as an auto-playing video, a thumbnail plus link, or a bare link.
The article mentions that MNG supports sprites and commands for movement, which would make animations not only take up less storage space in the file but also much crisper.
Ping or Pee-Enn-Gee, that's not unambiguous! :P