I just tried Zathura but found it did not support EPUB where mupdf has no problems with that format: $ zathura Books/nonfiction/English/Douglas_Murray/Douglas_

I just tried Zathura but found it did not support EPUB where mupdf has no problems with that format: $ zathura Books/nonfiction/English/Douglas_Murray/Douglas_Murray-The_War_on_the_West-2022-HarperCollins-English.epub error: Could not determine file type. This is the version currently on Debian/Sid, with all packages installed (zathura, zathura-ps, zathura-djvu, zathura-cb). I also noticed zathura renders PDF differently (and noticeably slower) compared to mupdf. It does not use mupdf as a backend, instead depending on libpoppler: Depends: libc6 (>= 2.4), libgirara-gtk3-3 (>= 0.2.7), libglib2.0-0 (>= 2.16.0), libpoppler-glib8 (>= 0.18.0), zathura-abi-4 Which version of Zathura do you have installed? [edit] Checking around I noticed that Zathura can use mupdf as a backend but this is not enabled in the build currently on Debian/Sid. It is available in e.g. Arch [1] but Debian does not package this part. I'll build it myself and give it a try. [1] https://archlinux.org/packages/?name=zathura-pdf-mupdf https://archlinux.org/packages/?name=zathura-pdf-mupdf