How do I post a game board from my pgn file

I've seen others do it but can't find any FAQ on it.

I was confused for a very long time on how this worked as well. Turns out if you just post a link to the game it will be embedded in the forum. ex:
en.lichess.org/m9dlxnVq#13

all i put was "en.lichess.org/m9dlxnVq#13"

Notice that the board position is preselected, that is due to the hash part in the url (the '#<number> part'). This works only with boards from analysis windows. Game boards will be posted with the start position. For example, i selected the same position in both windows:

Game window:


Analysis Window:

@thibault In my opinion the game window could behave like the analysis window when copypasting the url.

oh, excellent, thanks very much :-)