About QRNest
QRNest is a QR code maker for people who want a scannable file without handing over the contents. Static codes are drawn in the browser. You can leave without an account.
An account exists for two jobs: saving a template, and hosting a dynamic link whose destination can change after the code is printed. Those features need a server, so they are separate from the generator.
The scan check on each tool decodes the preview in your browser. It is there to catch low contrast, a crowded logo, or a missing quiet zone before you print. It is not a certificate that every camera will succeed.
Payments appear only when Stripe is configured for this server. There is no pretend checkout, and card numbers are not a field in this application.