Dropbox directly to Facebook

[r12rtpilot]

Dear Mods, please move this question if I've put it in the wrong Forum...:smokingsomb:

My Mac will not recognize my S3 in order to transfer pix, so I installed Dropbox, which is an easy work around.

Question is, how can I post a pic directly from Dropbox to FB? Currently I'm downloading the pix from DB and putting them in a folder on my desktop, THEN posting them on Facebook.

Any thoughts?

Cheers, and thanks for your support!

Steve