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How can I disable the "this PDF document might not be displayed correctly" notification?

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  • 24 have this problem
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  • Last reply by cor-el

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Almost all PDF files produce the "this PDF document might not be displayed correctly" message when viewed with the built-in PDF viewer.

This message does not convey useful information. It appears on almost all PDF files (even though they usually work correctly after all); it sometimes fails to appear even on files that don't work (so it does not accurately predict whether a given file will work); when a file doesn't work, there is no way to make it work short of using an external viewer (so the error I'm being warned about is not something I can fix); and it demands a user action to dismiss it EVERY TIME it appears (so it places a disproportionate demand on my attention). How can I disable it?

Please note that I am not looking for instructions on how to disable the built-in PDF viewer. I just want to turn off the warning message.

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The only way to stop this message is to disable the built-in PDF Viewer and use another viewer.
On Linux you only have an older version of the Adobe Reader available, so you may have to open the PDF files in an external viewer like evince.


You can set the pdfjs.disabled pref to true on the about:config page to disable the build-in PDF viewer.

You can check the value of the plugin.disable_full_page_plugin_for_types pref on the about:config page and remove the application/pdf part if present or reset the pref to the default via the right-click context menu if you want to display PDF documents in Firefox with another application (i.e. not the built-in PDF Viewer).

See also:

The latest stable version of the PDF Viewer (pdfjs) extension:

Latest development version of the PDF Viewer (pdfjs) extension: