There is a very simple manga reader. It doesn’t require high power of the computer and it works very fast. From dependencies, it requires only python, and GTK. If you have unrar installed on your system, it can also read directly from the .rar archive (it automatically unpacks the archive in /tmp). It also supports other archive formats.
The manga reader I want to talk about is called mcomix. It is quite popular and is available on Linux, BSD and Windows. It is open source and available in repositories. Mcomix is fresh, receives updates to this day, so it continues to evolve and improve.
To install it on Windows, you just need to download the program through the browser, follow this link
To install mcomix on Linux Ubuntu, Mint, Debian and others, just type
sudo apt install mcomix
What else can we say about customization? It is really cool. You can change hotkeys, colors. It supports transparency of images, that is, if you like transparency, this is what you need. Library is also available. Bookmarks too. So you can sort the manga on the shelves and save reading progress.
Mcomix has support in many languages.
Disable automatic page turning
I recommend turning off one annoying me option. Go to Edit -> Preferences -> Behaviour and uncheck
"Flip pages when scrolling off the edges of the page".
After that, your pages will not turn over when you approach their edge. You can use the “Page Up” and “Page Down” keys instead. I think this is much more convenient.
Mcomix itself finds the next Chapter/Volume by filename
So, if you are on the last page of a volume or chapter, then scrolling to the next page, mcomix opens the next chapter or volume. It is convenient and doesn’t require additional efforts.
Some useful shortcuts
Ctrl + O - open file Ctrl + Shift + Q - exit and save progress Page Up - previous page Page Down - next page - and + for zoom Up , Down, Left, Right arrow - Scroll up, down, left, right Ctrl + Shift + S - save page as ...
You can see more or even change it right here Edit -> Preferences -> Shortcuts