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Why can't I open PDF files in Firefox?

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New Contributor

Why can't I open PDF files in Firefox?

I cannot get PDF files to open for viewing in Firefox. I am on Mac OS platform. This seems to be such an ongoing issue. I have followed the troubleshooting procedures to no avail. I like the look of Firefox better than Chrome, but I am switching over to Chrome because PDF's are so much easier to handle on Chrome, and I am sick of wasting time with this. Any last minute tips or advice?

2 REPLIES
Legendary Contributor

Re: Why can't I open PDF files in Firefox?

Firefox > Preferences > Application

  • search for "PDF" > Action "Preview in Firefox"
Site Moderator

Re: Why can't I open PDF files in Firefox?

The Adobe Reader plugin may not be working properly on Mac.

Disable the Adobe Reader plugin in Firefox (Tools > Add-ons > Plugins) and use the external Adobe Reader application or Preview application instead.

PDF files may be found under entries like Portable document or Adobe PDF document or Adobe Acrobat Document.

  • Firefox > Preferences > Applications > Adobe PDF document : Use Adobe Reader