This allows you to view PDFs, Postscript files, animations and movies, amongst other file types all from within Mozilla (with supporting applications). You can install it with the link provided or search for it in the software center directly One note however, this program doesn't always work seamlessly, it is In Firefox, go to Options > Applications, then find "Portable Document Format (PDF)" and click on the drop-down menu to choose an option other than Firefox. In Chrome, enter, "chrome:plugins" in the address bar, then click the Disable link under the "Chrome PDF Viewer" plugin entry. Malgre les efforts fournis a chaque mise a jour de Firefox, certains besoins specifiques ne peuvent etre combles qu'a l'aide de plugins. Dans ces bonnes dispositions de lecture, un papier retient votre attention. Avec Evernote Web Clipper, plus besoin de sauvegarder vos liens dans le fouillis que Firefox requires plugins in order to read or display special content from the websites. Plugins are programs that are integrated into Firefox that allows websites to provide content to you. Such content includes flash videos, java games and streaming video from the Internet. Chrome and Firefox have already implemented its own PDF render engine within the browser, hence, such render does not support Adobe's special interactive Since the plugins page has been removed in Chrome version 57, here is how you can disable the default PDF viewer and use the native Acrobat