Open Source QR Code Generator

The trap of a QR code isn't making one - it's that a dynamic code points at a redirect the generator controls, so a sticker on a thousand products or a poster already printed can be silently retargeted, paywalled, or killed the day a free service decides to monetize it. The open source generators here produce both static codes and dynamic ones whose redirect you host yourself, so the link a printed code resolves to lives on infrastructure you own and can't be switched off or held hostage by whoever made the image.