The entire thing (including the editor!) is a single .html file. By default, even images are embedded.
For my ADHD Wiki[2], a resource that talks about ADHD with a copious amounts of relatable memes intertwined with the text, I chose to just use images in the same directory instead of embedding them; so you might need to do some work to download that page (I think File -> Save as.. can give you a readable static version on some browsers).
Anyway, somewhat surprising that people are stumbling into how much you can do with just one well-crafted .html file. Look ma, no node.js, no (no)SQL database, no nothing except for one file for one website (and that file isn't even that large, given what TiddlyWiki allows you to do).
TiddlyWiki can be run on node.js, but I don't see much reason to. If I want to make changes, I use the built-in editor, and then the "Save..." button generates me the .html of the updated version. Save it over the old one, upload over ftp, done. No deployment process to speak of.
And, at that, the feature set rivals (and, at times, exceeds) that of, say, Wikipedia.
(And for math nerds: it supports LaTeX via a KaTeX plugin. Maybe you can't copy-paste your entire thesis, but it's pretty damn close to real-time full-featured LaTeX).