Sure, an example is
https://www.zylstra.org/blog/2022/09...n-hypothes-is/. I used the SingleFile chrome extension to generate a single .html file for this, and when viewing that local .html file in Chrome, it displays in the same way as natively (i.e. all of the header contents and sidebar render properly, see first screenshot). When viewing this same .html file in KOReader, I think everything still shows up and the content is easily readable, but you lose the look and feel of the header and sidebar and comments. I'm curious if there is or could be a way to view this file in a non 'Reflow' mode as well, similar to how KOReader lets you read PDFs with Reflow off (natively) or Reflow on (epub-like). I'm guessing this is not possible, though.
https://github-production-user-asset...f052f35893.png
https://github-production-user-asset...eecad7a74c.png