Please, don't make me run React to read your document, and don't make my device parse Markdown and generate HTML on each visit. This is wasteful. I and the planet should not suffer because you decided to author your book using Markdown (which is a fine format, but my browser does not understand it natively). A virtual book is best served as plain old static HTML pages. Shareable links is indeed an impressive feature, but it has been a given on the Web since 1991, I think we don't need to be impressed by it in 2021.

You can add some JS here and there for the few really interactive elements of the document but my browser already has all the features to render documents and links perfectly fine. People have been able to "click around" since 1991 and we never needed to download, parse and execute 2MB of JS for this.

Your book is probably big, and I'm probably not reading it in one go, so if it includes images and videos, downloading it all is probably unnecessary and the book is probably best split in several HTML pages. If you want to allow me to consult it offline, that's very kind and noble. Just put a zip file somewhere I can download.

Sorry for the rant, but I'm a bit fed up by having to download run megabytes of Javascript I can't control (and even read, because yay, bundles!!) to browse the web, just because.