Can work on almost any webcomic/manga page, preloads 5 or more pages ahead (or behind), navigates via ajax for instant-page-change, lets you use the keyboard, remembers your progress, and it's relatively easy to add new sites
[Konachan / yande.re] Search: ID Navigation
Adds a "Mode" link to the paginator which switches between normal navigation and ID navigation. ID navigation prevents skipping over images as a result of images on previous pages being deleted and prevents showing images twice or loosing your place.
Adds a few quality of life improvements on Sankaku Channel: 'Choose/Set Parent' modes, automatic image scaling, duplicate tagging/flagging, muting videos, speaker icons on loud videos, + - tag search buttons. Fully configurable using localStorage.