Facebook includes a built-in feature for instant messaging and voice/video calls called Facebook Chat. With Facebook Chat you can communicate with your friends without leaving the social network's interface. Furthermore, you have the possibility to attach files and documents to your text messages. In this article, we will guide you through the process of how to send attachments on Facebook.
Sign in to Facebook and click on Chat > New Message. Type the name of the recipient(s) in the To: field, write your message and then click on the Add files (paperclip icon) to attach the desired file:
Browse for the file and then click on OK > Send.