Turn an address into something you can actually send someone: a short link and a QR code. Everything happens in your browser, nothing is stored, and no server sees the address.
The link carries the details in its address bar, so anyone who opens it sees the same request with the same QR code. There is no database and no account: if you lose the link, just make it again.
Check the address before you pay anything. A link is only as trustworthy as whoever sent it to you. The address is shown in full underneath the code precisely so it can be compared against one you already trust.