Google Chrome comes with an in-built PDF viewer for viewing PDF files. It comes very handy and many people finds this a very good feature. But there are many people who don’t want to use Chrome PDF Viewer to view PDF files, instead they are happy with their favorite PDF reader applications. If you fall into the second group of people and want to disable Chrome PDF Viewer plugin, here’s how to do it.
Open a New Tab in Google Chrome web browser.
about:plugins in the address bar and press Enter.
Now, find the entry for Chrome PDF Viewer, and simply click on the Disable link.
From now on Google Chrome will prompt you to download the PDF file instead of opening it. If you want to revert back and again enable Chrome PDF Viewer, simply follow the above steps and click on the Enable link.
If you are interested in also disabling the Google Chrome built-in Flash support read here for a quick solution.