Idk if it will work with Wisp, but its just so great that I gotta recommend it lol

Try facespace or Damus works for me

Nostr.build

Might be a display not an upload issue, I’ve noticed primal mobile displays images low res but if I look at the same pic on other clients it’s high res

Happened to me a little while back ago re primal too

Damus works for me, haven’t had an issues with image compression