Such a page has both dynamic and static information in it. If you don't have Internet access, that static info can still be helpful. A QR code can hold 2.9 MB of data. I'm imagining a QR code that contains the static information, and a small script that checks for connection and then redirects to the full page that also has the dynamic info. A QR code on an eink screen that gets remotely updated over LoRA could even include the dynamic info.