<bmx-qr-code>
A QR code for a link, a Wi-Fi network, a contact card, a payment reference or any text, made in the page.
The third has a logo in the middle: with a logo the code is made at the highest error correction, so it still scans.
A Wi-Fi code for the office
Every property, event and method: https://docs.binarymission.co.uk/webcomponents/bmx/bmx-qr-code.html