Google Docs PDF Viewer can be invoked on a PDF at a URL using:
https://docs.google.com/viewer?url=
However, I am having a terrible issue (occurs all the time, repeatable with probability 1): the pdf viewer displays a blank page instead of the linked PDF. It goes away after 3-4 refreshes. This is a documented issue on StackOverflow (see thread for Google Community thread): Google viewer is opening blank page frequently
That thread mentions there exists a Microsoft PDF Viewer to view PDFs in-browser equivalent to the one above for Google.
But what is the URL for this Microsoft PDF Viewer? I cannot find it on Google :(
Thanks!