Browser
PlacaQR extension
QR this page opens PlacaQR with the tab URL already in the link field. Download 3MF or STL there. Ads stay on the website, which Google AdSense allows.
The Web Store listing is not public yet. In chrome://extensions turn on Developer mode and Load unpacked from the GitHub folder extension/.
What it does
Toolbar
QR this page — encodes https://… of the active tab.
Right-click
3D QR of this page, or of a link.