Support multiple document formats more than PDF
Even the plugin is called BSK PDF Manager but it not only just support PDF. You may enable to support: pdf, zip, gz, rar, png, jpg, jpeg, gif, tif, tiff, swf, doc, docx, xlsx, pptx csv, crtfsv, pages, numbers, keynote, ies.
Navigate to your site Dashboard -> BSK PDF Pro -> Settings and click General Settings tab, there you just need to check the documents extension which you'd like to support.
Purchase BSK PDF Manager Pro