YACReader is a free and open source comic reader application for Linux, Windows and MacOS. Using YACReader you can read, browse and manage all your digital comics collection. It supports rar, zip, cbr, cbz, tar, pdf, 7z and cb7, jpeg, gif, png, tiff, bmp and lots of comic and image file types. It comes with build-in search, tags, tracks comic reading progress, brightness, contrast and gamma sliders, bookmarks, double page mode, full size view, full screen mode and more. You can also try OpenComic comic book reader app.
How to Install YACReader on Ubuntu Linux
YACReader is available as a flatpak package file from flathub remote repository. So you need to install the latest version of flatpak and flathub on your Ubuntu Linux system. Follow below link for the installation steps.
Restart your system after the flatpak installation. After that open the terminal software (ctrl+alt+t) and run below command to install YACReader comic reader app.
flatpak install flathub com.yacreader.YACReader
After that run this command to open YACReader app.
flatpak run com.yacreader.YACReader
And uninstall YACReader app using
sudo flatpak uninstall com.yacreader.YACReader