Found this by accident, it appeared in a google search.
Source: https://www.reddit.com/r/Enhancement/comments/14v5ss0/reslike_keyboard_shortcuts_for_lemmy/
https://github.com/vmavromatis/Lemmy-keyboard-navigation
I just wrote this for me. It was the only missing piece in order for me to move over to Lemmy. If anyone wants to use it (or improve it) feel free!
Navigation is pretty straightforward:
Down = Next post / comment Up = Previous post / comment Right = Next page / parent comment Left = Previous page / parent comment A = Upvote Z = Downvote X = Expand C = View Comments Enter = View Link
Had to reenable the script to test. a and shift a do the same. a only works on posts that do not have a fedi link. If the post has a fedi link if you press a once it saves it, press a a second time it opens the fedi link.
Sounds like a bug to be added to the github.
I’ll be testing this myself later on too.