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How to view inline PDFs on Firefox?

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My Firefox browser is the latest version. It’s sure that the PDFs are set as Preview in Firefox, but after opening a page, it emerges ‘ This browser dose not support inline PDFs. Pleases download the PDF and view it. ‘ I don’t know what happened, please help fix it.

My Firefox browser is the latest version. It’s sure that the PDFs are set as Preview in Firefox, but after opening a page, it emerges ‘ This browser dose not support inline PDFs. Pleases download the PDF and view it. ‘ I don’t know what happened, please help fix it.
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  • User Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 12_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) CriOS/73.0.3683.68 Mobile/15E148 Safari/605.1

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kbrosnan
  • Moderator
573 solutions 3785 answers

Are you using Firefox for Android? You are posting in the forum for help with Firefox for Android. The user agent you are using to access this forum says that you are using Chrome on iOS.

Are you using Firefox for Android? You are posting in the forum for help with Firefox for Android. The user agent you are using to access this forum says that you are using Chrome on iOS.
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Question owner

kbrosnan said

Are you using Firefox for Android? You are posting in the forum for help with Firefox for Android. The user agent you are using to access this forum says that you are using Chrome on iOS.

No. I am using Firefox on windows 8.

''kbrosnan [[#answer-1215904|said]]'' <blockquote> Are you using Firefox for Android? You are posting in the forum for help with Firefox for Android. The user agent you are using to access this forum says that you are using Chrome on iOS. </blockquote> No. I am using Firefox on windows 8.
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kbrosnan
  • Moderator
573 solutions 3785 answers

Moving to desktop.

I don't have a specific solution. Checking if any of the troubleshooting options help https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems

Moving to desktop. I don't have a specific solution. Checking if any of the troubleshooting options help https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems
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jscher2000
  • Top 10 Contributor
8326 solutions 68158 answers

Hi dalun, does this problem only occur with PDFs embedded into other pages, or also PDFs that load in their own tab, such as:

https://www.jeffersonscher.com/temp/userChrome_css.pdf

In case Firefox can't load a PDF in its own tab, could you try switching it between Always Ask, Save File, and Preview in Firefox? Please close the Options page and re-open it in between changes.

Hi dalun, does this problem only occur with PDFs embedded into other pages, or also PDFs that load in their own tab, such as: https://www.jeffersonscher.com/temp/userChrome_css.pdf In case Firefox can't load a PDF in its own tab, could you try switching it between Always Ask, Save File, and Preview in Firefox? Please close the Options page and re-open it in between changes.
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Question owner

jscher2000 said

Hi dalun, does this problem only occur with PDFs embedded into other pages, or also PDFs that load in their own tab, such as: https://www.jeffersonscher.com/temp/userChrome_css.pdf In case Firefox can't load a PDF in its own tab, could you try switching it between Always Ask, Save File, and Preview in Firefox? Please close the Options page and re-open it in between changes.

The problem only occurs while opening embedded PDFs.

''jscher2000 [[#answer-1216004|said]]'' <blockquote> Hi dalun, does this problem only occur with PDFs embedded into other pages, or also PDFs that load in their own tab, such as: https://www.jeffersonscher.com/temp/userChrome_css.pdf In case Firefox can't load a PDF in its own tab, could you try switching it between Always Ask, Save File, and Preview in Firefox? Please close the Options page and re-open it in between changes. </blockquote> The problem only occurs while opening embedded PDFs.
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jscher2000
  • Top 10 Contributor
8326 solutions 68158 answers

It's probably the way the page is designed. It may be checking for a PDF plugin and displaying the message if it doesn't find one. Can you give a link to an example page where this happens?

It's probably the way the page is designed. It may be checking for a PDF plugin and displaying the message if it doesn't find one. Can you give a link to an example page where this happens?
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cor-el
  • Top 10 Contributor
  • Moderator
17107 solutions 154497 answers

The builtin Firefox PDF viewer only works for files send by the server as application/pdf.

The builtin Firefox PDF viewer only works for files send by the server as application/pdf.
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cor-el said

The builtin Firefox PDF viewer only works for files send by the server as application/pdf.

Oh! I see. Thank you!

''cor-el [[#answer-1216496|said]]'' <blockquote> The builtin Firefox PDF viewer only works for files send by the server as application/pdf. </blockquote> Oh! I see. Thank you!
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