A visual cheat-sheet for the 17 keyboard shortcuts found on Reddit.com.
Shift ? — Show shortcuts
J — Next post or comment
K — Previous post or comment
N — Next post in lightbox
P — Previous post in lightbox
Enter — Open post
X — Open or close expando
L — Go to post link
A — Upvote
Z — Downvote
C — New post
R — Reply to comments
Ctrl Enter — Submit comment or post
S — Save
H — Hide
Q — Open navigation
Enter — Collapse or expand comment