SUMMARY Currently you can only change the default font in the EPUB backend for okular. I'd like there to be more options to improve the reading experience. For example adding an option to change margin width and line height to improve reading comfort. Currently it is quite uncomfortable to read epubs on Okular. STEPS TO REPRODUCE 1. Open epub in okular OBSERVED RESULT Line heights and margins are tiny EXPECTED RESULT Have adjustable options for line height and margins in epub backend configuration SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.26.0 KDE Frameworks Version: 5.99.0 Qt Version: 5.15.6 Kernel Version: 5.15.74-1-lts (64-bit) Graphics Platform: Wayland