I've noticed SharePoint project (2013 atleast) can view in browser Excel, PowerPoint, and Word document files, which is great.
So when you create an html5 web app on SharePoint, you can link the docx/pptx/xlsx files via link tags, and it'll still be able to view these files in browser.
However, as soon as the link refers to an outside source (other than within the SharePoint documents), then it automatically downloads it to user's local machine.
Is there a way around it? like temporarily download it to SharePoint server, and let the user view in browser?