[seanwilson]

Could you go into more detail about why printing a web page doesn't do what you want? You mean for example different versions of Chrome would screw up your previously working layout? How about between the same browser on different operating systems?

I've looked into JS libraries that will directly generate PDFs you can print but each library seems to come with a lot of caveats.

[andreareina]

Yes, different versions would produce different layouts. Element positions and bounding boxes would change, more so in the horizontal dimension than the vertical. The text itself would be rendered at the proper size though. FWIW Chrome was better-behaved in this regard than Firefox, but even a 10% shift is too much when you need to get text into a specific box that's already been printed.

I didn't bother to check whether the same browser version on different operating systems would produce the same results.