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Dear Firefox Support Team,

I am encountering an issue where PDF files fail to display properly in Firefox, appearing as blank pages. This problem persists across multiple PDF documents, suggesting a potential browser compatibility or configuration issue.

Request:

   Please investigate this behavior to identify the root cause (e.g., rendering engine, plugin settings, or recent updates).

   Adjust Firefox’s default PDF handling settings or implement necessary fixes to ensure proper PDF display.

Additional Details:

   Firefox Version: All
   OS: windows&mac
   File link: https://res.mdpi.com/data/pharmaceuticals-18-00847-v4.pdf
   Steps to Reproduce: Open any PDF file → Blank page appears.

This issue impacts productivity and user experience. Kindly prioritize resolving it or provide workarounds. Thank you for your attention.

Best regards, Mia Yu meijuan.yu@mdpi.com/1036926860@qq.com

Hi!! I´m writing a whitepaper and need to link to some PDF files but the address I get, for instance, is "file:///C:/Users/ritas/Desktop/NAC-DGERCGC18-00000233-4.pdf". Of course I cannot direct readers to my desktop. I´ve been trying for too long to fix this, please help. I need to be able to link to the document in the correspondent website.

Thanks

Rita

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This condition does not occur when I try to open the same PDF from the same website open in either Chrome or Edge, the PDF opens properly which leads me to believe the problem is in Firefox and not my Adobe installation.

Thank you

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https://support.hpe.com/hpesc/public/docDisplay?docId=c01081836&docLocale=en_US

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Uncaught TypeError: Promise.withResolvers is not a function

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Phone is an honor x6

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My previous setup had windows 10, but the same version of Firefox.

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Now, on my new computer and windows 11, when I try to open a php page offline with Firefox I get a window asking me what to do with the file - "open with" or "save file". When I choose "open with" and choose Firefox, Firefox opens up another tab with the address of the file in the address bar, but no content below, and then another window pops up asking me what I want to do with the file. This goes on indeffinately if I keep clicking "open with". There's no issue with the files I'm trying to open as I can open the exact same files on my win 10 computer with the same Firefox version and the display just fine. What's going on?