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How to view pdf in Firefox without downloading?

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I'm able to download PDF files and it automatically opens in Firefox fine. When I try saved PDF files it just opens a blank tab. I set Firefox as default PDF viewer and I have flash player plugin and adblock. Same result even if disabling all plugins. Same result in Safe Mode. I'm using Windows 10 with Firefox 41.0.2.

I'm able to download PDF files and it automatically opens in Firefox fine. When I try saved PDF files it just opens a blank tab. I set Firefox as default PDF viewer and I have flash player plugin and adblock. Same result even if disabling all plugins. Same result in Safe Mode. I'm using Windows 10 with Firefox 41.0.2.

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Hello there,

Can you type about:preferences#applications<Enter> in the address bar.

What is the information for those type of files?

If you wish to view pdf files on Firefox u can change the setting by clicking the button at the far right.

Hope this helps!