zathura-pdf-mupdf (zathura support for mupdf backend) The zathura-pdf-mupdf plugin adds PDF support to zathura by using the mupdf rendering library (replacing the poppler-based PDF support from the zathura package). To switch between the mupdf and poppler backends without reinstalling packages, adjust the symlink at /usr/lib(64)/zathura/pdf.so. It should point to either pdf-mupdf/pdf.so or pdf-poppler/pdf.so. You can also reinstall zathura to switch to the poppler backend, or reinstall zathura-pdf-mupdf to switch to the mupdf backend (whichever was installed last "wins"). zathura-pdf-mupdf 0.3.2 is the last possible update for Slackware 14.2. Newer versions would require a newer gtk+3.