I have thought of this; thought not unto 500 years but more like -- so my kids can just keep to somewhere to read. My thought process was to start with as much simplification as possible -- plain text. While you are still able to maintain that, perhaps write in something like Markdown -- plain text enough with the formatting enough to separate the sections/content.
Use a tool to convert those to HTML, which can be hosted anywhere or be just drag-n-drop in future once you are no longer maintaining/updating it.
My bet is that plain-text will survive any digital changes, so will HTML.
Just make sure there is someone to take to the next step after you. But it really fizzles out after that, well, individually we are not important enough to be of much trouble to anyone for this.
I started my journey recently and is, I would like to believe, just the beginning and I tried writing it down for my personal website which is 20+ years old and surviving -- https://brajeshwar.com/2021/brajeshwar.com-2021/
Use a tool to convert those to HTML, which can be hosted anywhere or be just drag-n-drop in future once you are no longer maintaining/updating it.
My bet is that plain-text will survive any digital changes, so will HTML.
Just make sure there is someone to take to the next step after you. But it really fizzles out after that, well, individually we are not important enough to be of much trouble to anyone for this.
I started my journey recently and is, I would like to believe, just the beginning and I tried writing it down for my personal website which is 20+ years old and surviving -- https://brajeshwar.com/2021/brajeshwar.com-2021/