Need more embed support for sake of QoL!

I have a variety of files in which discord doesn't have embed support. It makes it a bit tedious to quickly share or display some of these files with others.

Some common ones I find myself having to deal with are:
*.jfif (JPEG Interchange, unfortunately commonly found with Twitter desktop),
*.heif/*.heic (High Efficiency Image File),
*.mkv (Matroska Video). 

I would love for Discord to broaden embed support for more file types. Are there workarounds? Although they are quite annoying to deal with, there are! However, this QoL revision to chat features would be greatly appreciated by many users across all platforms. Thanks!