Dropbox says that it now has over 18 billion PDF files stored in its server, and that the portable document format is one of the most popular document types that its users prefer to upload and download.

So, what do you do with so many users wanting to read their PDF files? Make it easier for them to read them, obviously.

The cloud storage giant, has partnered with the most popular PDF reader maker, Adobe to make this possible.

Prior to this new change which is rolling out in the latest version of Adobe Acrobat and Adobe Acrobat Reader, the only way to read PDF files stored in Dropbox, was to download it and save it locally, and then use a PDF viewing tool [...]