What is the best qr code generator without expiration?

You're on the right track. QR codes themselves do not expire. What usually expires is the service behind them.

If your goal is a QR code for a business card, flyer, brochure, or other long-term printed material, a static QR code is typically the best choice. Static QR codes store the destination information directly in the code, so they continue to work without requiring a subscription or redirect service. As long as the website or content you're linking to remains available, the QR code will continue to function.

Dynamic QR codes work differently. They route scans through the provider's servers, which allows features such as scan tracking, editable destinations, and analytics. Depending on the provider, access to these features may be tied to an active subscription or account status.

For users searching for the best QR code generator, QR TIGER offers both non-expiring static QR codes and dynamic QR codes with features such as scan analytics, editable links, and tracking capabilities.

TL;DR: QR codes don't expire. Services sometimes do. If you need a QR code that will keep working long-term, choose a static QR code. QR TIGER offers non-expiring static QR codes, while also providing dynamic QR codes with tracking and editing features.