Yes, our service is 100% free for students, faculty, and all site visitors. We do not require registration, add third-party watermarks, or impose any limits on the number of generated QR codes.

No, we create static QR codes that do not expire. They will work forever because the information is mathematically encoded directly into the image. The code will only stop working if the link you embedded is no longer active.

No. The QR code generation process happens entirely in your browser (on your device). We do not send your data (links, vCard contacts, Wi-Fi passwords) to our servers, and we do not track scan statistics. This guarantees complete data privacy.

For online publishing, messengers, social networks, or presentations, PNG is ideal. However, if you plan professional printing on banners, posters, flyers, or business cards, always download the vector SVG format. It can be scaled to any size without losing quality.

Because the generated codes are static, the link or text forms the actual pattern of squares. Therefore, it is technically impossible to change this data after generation. If your link changes, you will need to generate and print a new QR code.

Go to the "Wi-Fi" tab, enter the exact name of your network (SSID) and the password. Print the generated code and place it in the classroom or office. When guests scan it with their smartphone camera, the device will automatically prompt them to connect to the network without manually typing complex passwords.

There are three main reasons for scanning errors:
1. Poor contrast: Always use a dark code color (e.g., dark blue or black) on a white or light background. A light yellow code on a white background will not scan.
2. Size: When printing, ensure the code is at least 2x2 cm.
3. Too much data: If you enter very long text, the dots become too small. Try shortening your link using a URL shortener service.