Why doesn't Firefox 56 seem to have a built-in PDF viewer?
I've read every fix on Modilla's support pages. None of them work!
- I can't set my preferences in the "Applications" section under actions to view using "Firexfox". That option isn't there. - I've tried restarting and re-installing. Didn't work. - I deleted all external extensions. Didn't make a difference. - I tried to find the mimeTypes.rdf file but can't even find it to delete it.
PLEASE help. I work with PDFs all day and I have to use Firefox.
Chosen solution
I resolved this problem by installing Firefox 64bit.
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Firefox 56 for Windows still has a built-in PDF viewer.
The "Applications" panel was consolidated into the "General" panel. Can you set up your "Portable Document Format (PDF)" preference there?
It would be like this article, but selecting "Preview in Firefox": View and edit PDF files using Firefox’s built-in viewer.
I'm aware of that and as I mentioned in my post, I went there and it doesn't show the option "Preview in Firefox" in the drop-down menu under Actions for .pdf files.
jscher2000 said
Firefox 56 for Windows still has a built-in PDF viewer. The "Applications" panel was consolidated into the "General" panel. Can you set up your "Portable Document Format (PDF)" preference there? It would be like this article, but selecting "Preview in Firefox": View and edit PDF files using Firefox’s built-in viewer.
I'm aware of that and as I mentioned in my post, I went there and it doesn't show the option "Preview in Firefox" in the drop-down menu under Actions for .pdf files.
I also don't want to use a different pdf viewer. I want to use the one built in Firefox.
Chosen Solution
I resolved this problem by installing Firefox 64bit.
Hmm, that didn't work for me. I am running 56.0.2 64-bit on Mac OS 10.12.6, and the pdf's on my web site are no longer visible, though they still work fine in Safari and in Google Chrome. I tried the Preferences command and found, under Applications, two choices: PDF file (application/nappdf) and PDF file (application/save), both set to "Always ask" and both with no other choices than "Save file" and "Use other...". I restarted FireFox several times, with no change. After still another restart, I finally found only a single PDF file choice, set to "Preview in FireFox." Finally success! Or so I thought. I've now been able to view a pdf successfully on my site, but I continue to worry: I've cleared my cache, reloaded the Preferences page, and it's back to the two choices from before, with no possibility of "Preview in FireFox." (But my web page still works: I can still see the pdf properly.) I'll post again if the situation changes: it currently is that the Preferences page is at odds with behavior.
Modified by ssteketee