Firefox 15 introduced a new feature, though disabled by default, that allows you to view PDF’s from directly within a Firefox tab. This tutorial will show you how to enable this feature, so that you don’t have to use the Adobe Acrobat Add-on to accomplish the same thing.
I’ve never loved having to use the Adobe Acrobat Add-on to view PDF files in Firefox. Fortunately, the Firefox developers have been working on their own PDF viewer for Firefox. This brief tutorial will show you how to enable it.
- In the Firefox Address Bar, type about:config (without http:// or anything else) and hit enter.
- If prompted, click the I’ll be careful, I promise! button.
- In the Search: field, enter in pdfjs.disabled
- You should see only one entry (the pdfjs.disabled one) in the Preference Name section.
- Double-click it to change the Value to false
- Now restart Firefox. Once Firefox has opened again, click the “Firefox button” (top left corner of the browser, see image below) and select Add-ons
- Locate Adobe Acrobat in the Add-ons Manager and click the Disable button.
- Now when you click on a link to a PDF file while you’re browsing, the PDF will open inside of the Firefox window, using Firefox’s built in PDF viewer. There are a number of features available using this viewer – you can increase and decrease the size of the font in the PDF, add or remove the ‘sidebar’, jump to specific pages etc.
- Now you don’t have to slow down Firefox with Acrobat! :)