it may be that this other app is set as default app for handling PDF documents. Next, search for pdfjs.disabled, then double-click on the entry, which will turn the boolean value from 'false' to 'true. PDF Viewer can directly open PDF documents shared from other apps (email. If you want to disable the built-in PDF viewer entirely, type, 'about:config' in the address bar, then click on the 'I'll be careful, I promise!' button. Go to Settings > App Management > Default App > PDF file and tap the preferred PDF file viewer to set as default. Or, you can set it to Always ask, so you'll get a prompt every time. You can also choose to save PDF files by default when you click on them, rather than opening them. Click the drop-down list to select an alternate PDF viewer. Under the Action column, you'll see that it's set for Preview in Firefox.

Go to Options > Applications, then find the listing for Portable Document Format (PDF). If you prefer to use another PDF viewer, like Adobe Acrobat, you can change the default PDF viewer. If they don't, make sure you've disabled any PDF plug-ins you may have previously installed. Its in the section 'Choosing a default PDF viewer'. One of the options in Adobes tool is to choose if the default pdf viewer should be Acrobat or reader. The Firefox PDF viewer is enabled by default and will display PDFs within the browser when you click on PDF links. I take it that you want to prevent pdfs opening with Acrobat and use reader instead when both products are installed Use Adobes Customisation Wizard rather than Install Tailor. It's a feature that most people will find convenient as is, but if you're looking to take some control over how Firefox handles PDF files on the Web, here's how: While Chrome has had an internal PDF viewer for a couple of years now, Mozilla only just added the feature to Firefox 19. Firefox adapts to Windows 8 touch-first interface.Display the full URL in Firefox with this tweak.

Mozilla puts native PDF viewer in Firefox 19.

How to make adobe my default reader