I hope the Firefox browser plug-in of MuPDF is still mainained...
I have noticed, that trying to move the scrollbar in a loaded PDF document results in MuPDF plug-in being stucked.
Also it is working really slow in general, especially if it is a PDF with many pages and graphic elements.
Besides of this, it would be nice to have a navigation bar (little previews of the pages of the loaded PDF) on the left, where it is possible to navigate through the document.
We are going to rewrite the plugin to use the cross platform https://wiki.mozilla.org/NPAPI:Pepper APIs. Until such a time, the Firefox plugin (which has suffered from bitrot and uses a version of NPAPI plugin code that is obsolete) will remain disabled.
Is there any news on a plug-in update? Thanks!
*** This bug has been marked as a duplicate of bug 691330 ***