You can also download a "tag" from stackoverflow which is very useful.
I know there is now alternatives for several operative systems using the same docsets [2].
I can't recommend this app enough, it is worth every penny.
[2]: https://blog.kapeli.com/dash-for-ios-android-windows-or-linu...
[3]: https://devdocs.io/
Why print anything related to programming at all? What's wrong with opening the PDF on your computer and putting it side-by-side to your IDE? Isn't this more practical anyway? (Full text search, being able to copy & paste, and so on)
Of course you can argue that some people prefer reading on paper over reading on a screen. But that argument would be a strawman: The original commenter said they would print this specifically for the case of a broken internet, meaning their normal behaviour is to read that stuff online, on screen.
As a front-end developer, I very often print my layout to be able to scribble on them to show ideas and features mockups very quickly.
If there were no paper or wood products, those trees would be cut down to be replaced with homes, farmland, mining operations, etc. Owning land costs money, selling timber to the fiber & wood products industry actually preserves the forests occupying the land.