User Agent: Mozilla/5.0 (Windows NT 6.1; rv:19.0) Gecko/20100101 Firefox/19.0 Build ID: 20130307023931 Steps to reproduce: I am trying to get the fill-able fields in PDF viewer Actual results: we are unable to get the fill-able fields Expected results: can we disable PDF.js viewer and enable Adobe acrobat (show the PDF file in browser) using java-script , if it is not possible can we know the "activity" of the portable Document Format(PDF)(options--> Applications) using java-script.

This seems to be a duplicate of Bug 840439 . Anyway, in my opinion, too, this issue is extremely urgent.

The real bug is bug 739043 and we have bug 840439 for detection and we have afaik another bug about that a website should be able to mark a pdf incompatible with pdfs.js.