Productivity Sauce

Don't you just hate it when you click on a PDF link in Mozilla Firefox and the browser offers you to download the file? Fortunately, the PDF Viewer add-on provides a quick fix to the nuisance. With the add-on installed, the browser opens PDF files in a simple and elegant viewer.

The viewer interface is not overloaded with features, but it does include essential tools that allow you to download and print the opened PDF file, zoom in and out on the current page, jump to a specific page, and perform searches. In addition to that, the sidebar can be used to display the document's outline or thumbnails. In short, if you use Firefox as your browser of choice, this add-on is a must-have.