[vvladymyrov]

Is there one page where all principles and information about them are collected as one page so it can be downloaded and read in ereader?

[AdamCraven]

All principles on the website are currently in this repository: https://github.com/PrinciplesDotDev/principles In fact, this is the database for the website.

So you can download them from there and put it in an ereader or import it into an application that supports .md format.