How to unblock a blocked plug-in to display PDFs

Right-click on that PDF and choose to Download Linked File As… to your Desktop. It will open in the current Adobe Acrobat Reader DC, and also in Apple's Preview via double-click. There is something about that PDF that is incompatible with Apple's Safari PDF plug-in. Firefox 86 will open that link as expected.

The PDF was created in 2017 by Adobe InDesign CS3 (Windows) using the Adobe PDF Library v8.0. It also appears to be a PDF/X-3 document.

Kirk,

I have deleted the plug-ins in ~/Library/Internet Plug-Ins/ and verified there are no plug ins inside of /Library/Internet Plug-Ins/. I still get the "Blocked Plug-In" message when accessing a PDF link.

Thoughts?

Sean

You are welcome. I think the plug-in request had nothing to do with security, but how Apple's default PDF plug-in handles PDF documents, or in this case does not. There is a ton of internal XMP data in that PDF regarding all of the images it contains, and that may have derailed the Safari PDF plug-in too, if not the fact that it was a PDF/X-3 standard PDF.

You don't need any plug-in to open and view a PDF.

Delete the plug-in (probably Adobe).

Thanks Viking. Good idea.

The Apple security gets a little frustrating, but I do understand it.

Appreciate your help.

--Sean

The PDFs I was attempting to access are listed here:

https://alceehastings.house.gov/jnc/

Firefox has no issues with presenting these PDFs. They do have a couple of images, but not a lot.