How to upload a PDF document to a Facebook Business page
If you have a Facebook Business page for your business, you’ve probably noticed you can only upload photos and videos to your page. No PDFs, no Word documents, just photos and videos. Not sure of the reason behind it, but it is what it is.
After a few hours of searching, I found a very easy (and free) solution. It doesn’t allow you to upload the PDF to Facebook, but it does give you a link to the PDF that you can include in a post on your page. The solution is docdroid. You can upload documents in any format – they support PDF, DOCX, DOC, ODT, RTF, XLS, XLSX, ODS, PPT, PPTX, ODP, TXT and more.
You don’t need to register with docdroid to upload documents, but they encourage you to do so. It makes it easier to upload a newer version of your document without having to change all the places it’s linked to or from. Also – and this is important – their site says "Privacy is important to us! Uploaded documents are not publicly listed. If you want to, you can set up password protection or set your document to private at anytime."