To open a PDF file you downloaded in Firefox, using a third party viewer: Open the Downloads panel by clicking the download icon next to the address bar. Right-click on the file folder icon of the PDF file and select Open Containing Folder. Then in the Downloads folder, right-click. Many recent browser versions include their own, native PDF plug-ins that automatically replace the Acrobat and Reader plug-in from Adobe. Installing Firefox 19 or later, for instance, can result in your Adobe plug-in being disabled and replaced. Browser plug-ins typically do not support all PDF capabilities or offer comparable features. Disable the Adobe Reader plugin in Firefox (Tools Add-ons Plugins) and use the external Adobe Reader application or Preview application instead. Firefox Preferences Applications Adobe PDF document: Use Adobe Reader PDF files may also be found under another entry like Portable document.
I don't like the new pdf viewer, which keeps throwing warnings and is not nearly as useable as the Acrobat plugin. I wanted to go back to the old Acrobat plugin installed with Adobe Reader XI. I have searched these forums and support files and have tried the following, none of which worked:
1. Tools/Options/Applications, change pdf setting to 'use Adobe Reader.' This enables Reader but not the plugin. There is no option listed for 'Use Adobe Acrobat (in Firefox).' This option IS listed for other Acrobat file times such as Adobe Acrobat Forms Document.
2. Followed all of the suggestions on this web page, none of which worked: https://support.mozilla.org/en-US/kb/view-pdf-files-firefox-without-downloading-them
3. Reinstalled Reader XI. Didn't help.
4. Disabled Acrobat plugin in FF. Restarted. Re-enabled it. Restarted. Didn't help.
5. Changed pdfjs.disabled to true in about:config. Didn't make any difference.
Adobe Reader Firefox Extension
I'm pretty annoyed that I'm having to waste all of this time to get back to something that worked well. Just another lame update of FF that shouldn't have happened. You guys are rolling out the updates too often without enough input from users. And whatever happened to the idea of opting in to optional features instead of just forcing them on us. Will be looking to use IE more, where the plugin is working just fine.
Jul 13,2012 16:19 pm / Posted by Hall Paular to eBooks Topics Follow @HallPaular
Maybe you have always encounter the problem that each time clicking a link in Firefox, obviously, the hyperlink is a PDF file, the PDF is downloaded to your Mac automatically rather than opened in the Firefox? And what's worse, the downloaded PDF is probably not the one you needed?
You need to know that to open PDF in Firefox directly, you will need possess the corresponding Firefox add-on plug-in installed. In this post, we are going to discuss how to use Firefox open PDF on Mac.
Some PDF readers plugin are: Adobe Reader; Sumatra PDF.
Tips: If you want to edit, modify, delete text in PDF files to meet your needs on Mac, PDF Editor Pro for Mac is the best choice.
Steps on Opening PDF Files with Firefox on Mac
Firefox For Mac Open Pdf In Adobe Reader Touch
Step 1: Make sure that you have Adobe Reader installed on your Mac. Navigate to the page which has the PDF file you intend to open and then click the link to that file.
Step 2: In the 'Opening…' window that appears, click the 'Open with' radio button. Check the 'Do this automatically for files like this from now on.' check box.
Step 3: Click the 'OK' button. The PDF file will open in Preview or you may receive an error message. Close whichever one you see.
Step 4: Return to your Firefox browser and click on 'Firefox' in the primary menu towards the top of your screen. Click ”Preferences…', Click on the ”Content' icon. In the Select Helper Application window choose 'Adobe Reader' as an open PDF files tool.
Now with Firefox, your PDF files will now open with Adobe Reader. From the Adobe Reader application you have the option to print or save the file to your local Mac computer.