Signal

macOS
K

Display
Zoom in=
Zoom out-

Messages
Default action for selected message
View selected message detailsD
Toggle reply to selected messageR
Toggle emoji-reaction picker for selected messageE
Save attachment from selected messageS
Forward selected messagesS
Open context menu for selected messageF12
Delete selected messageD

Composer
Add newline to message
Expand composerK
Send (in expanded composer)
Attach fileU
Remove draft link previewP
Remove all draft attachmentsP
Edit the previous message
Mark selected text as boldB
Mark selected text as italicI
Mark selected text as strikethroughX
Mark selected text as monospaceE
Mark selected text as a spoilerB

Calling
Toggle mute on and offM
Toggle video on and offV
Accept call with video (video calls only)V
Accept call without videoA
Decline callD
Start voice callC
Start video callY
End callE