3 min read

Do QR Codes Expire? Everything You Need to Know

A common concern among business owners and creators is: Will my printed QR code expire or stop working over time? How long will it stay active?

The short answer is: True static QR codes generated on PNGQR will NEVER expire and will stay active FOREVER.

1. Why PNGQR Codes Never Expire

In a standard static QR code, your destination URL, Wi-Fi password, or contact vCard details are mathematically encoded directly into the black and white module matrix inside your browser HTML5 Canvas. Because there are zero middleman redirect servers, zero account signups, and zero subscription databases involved, the QR code functions as a permanent optical code—just like a standard supermarket UPC barcode.

2. Beware of 'Trial Period' Expiration Traps

Many commercial paid QR platforms create dynamic redirect links under a "14-day free trial". Once the trial ends, those services break your printed QR codes and redirect scanners to a paid subscription upgrade page demanding €“/month. On PNGQR, every code you generate is 100% static and subscription-free forever.

3. Only 3 Physical Factors Can Make a Static QR Stop Working

  • Destination Webpage Changes: If your website URL changes or returns a 404 error, the QR code still scans, but the destination website fails to load.
  • Physical Print Damage: Scratches, tears, or fading that exceed 30% Reed-Solomon error correction capacity.
  • Low Color Contrast: Printing dark codes on dark backgrounds or missing quiet zone margins.

Conclusion

As long as your printed paper, sign, or business card physically exists and your destination website stays online, your PNGQR code will work and stay active for decades to come.