Yes, QR codes have data capacity limits. The maximum amount of data depends on the version and error correction level, but typically a QR code can store up to 4,296 alphanumeric characters or 7,089 numeric characters. For best scanning performance, we recommend keeping your data concise, especially for URLs.

For guest users, QRKU does not save any data you enter. Your QR codes are generated on-the-fly and not stored on our servers. With a Premium account, your QR codes are securely saved to your account so you can access and manage them anytime, along with valuable analytics on how they're performing.

The free version lets you create custom QR codes with basic features. The Premium version includes advanced features like scan analytics, the ability to save and edit your QR codes, dynamic QR codes that can be updated after creation, and enhanced security options. Premium users also get priority customer support and access to bulk QR code generation.