Windows 10 bereikte EO (einde ondersteuning) op 14 oktober 2025. Als je Windows 10 gebruikt, lees dan dit artikel.

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Cant display pdf in internal viewer

Firefox Anders
Wesley Branton beantwoord
robertedgar
robertedgar

When I click a link to a pdf I get a Dialog Box... You have chosen to open: 

      XXX.pdf
           which is a PDF file (4.7mb)
           from xyz.com
       What should Firefox do with this file?
                 Open With TWINUI
                 Save File

If I go to https://mozilla.github.io/pdf.js/web/viewer.html this displays and I can view the PDF file from above.

So issue seems to be that firefox doesn't know what to do with the file rather than any problem with the file or actually displaying it

When I click a link to a pdf I get a Dialog Box... You have chosen to open: XXX.pdf which is a PDF file (4.7mb) from xyz.com What should Firefox do with this file? Open With TWINUI Save File If I go to https://mozilla.github.io/pdf.js/web/viewer.html this displays and I can view the PDF file from above. So issue seems to be that firefox doesn't know what to do with the file rather than any problem with the file or actually displaying it

Alle antwoorden (1)

Wesley Branton
Wesley Branton

Gekozen oplossing

In order to change the default reader for PDF files, follow these steps:

  1. Click the menu button New Fx Menu and click Options (Preferences for Linux and Mac).
  2. In the Options (Preferences for Linux and Mac) tab (window for previous than 38.0 firefox version), select the Applications panel.
  3. In the Search field, type PDF. You should find Portable Document Format (PDF).
  4. On the right hand side you should find an Action column. Use that to select your favorite PDF reader. In order to view PDF files in Firefox, choose Preview in Firefox.

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