Master branch:
AppImage for KDE okular
landing page: https://dimyme.github.io/okular/
wiki: https://github.com/dimyme/okular/wiki
Okular combines the excellent functionalities with the versatility of supporting different kind of documents, like PDF, Postscript, DjVu, CHM, XPS, ePub and others.
S3 Download: master: https://s3-eu-central-1.amazonaws.com/ds9-apps/index.html#!/okular-master-appimage%2F