Users can enter the data they want to encode and adjust settings like the size and margin of the QR code. They can upload a logo to be placed in the center of the QR code, select dot styles and colors, and choose a background color or image. As users modify these settings, the QR code preview updates in real-time. Additionally, there's an option to download the customized QR code as an image file.

The design of the page includes a layout with input fields for customization and a display area where the QR code is shown. CSS is used to style the page, ensuring that it is both functional and visually appealing. JavaScript, particularly with the QRCodeStyling library, manages the dynamic generation and updating of the QR code based on user input.