Greasy Fork is available in English.
Universal comic reader
此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.greasyfork.org/scripts/417893/1552356/vim%20comic%20viewer.js
It's comic viewer library which can be used by tampermonkey. Default key binding is originated from vim's one.
Basic shortcut is
i, Enter, NumPad0: toggle fullscreen
j, ↓: next page
k, ↑: previous page
;: download images
/, ?: adjust leading single pages
': stop and reload not completed image
Up to date example is here.
Although its version is over 1.0 but it does not mean it is stable. I will change its major version whenever breaking change happens.