What is the required size for a QR code image in the gift_card.liquid file?

The required size for a QR code image in the gift_card.liquid file is 120x120px. This specific size ensures that the QR code is clearly visible and scannable when printed or displayed. Using a higher resolution helps maintain the integrity of the QR code, reducing the likelihood of it being misread. While smaller sizes may seem sufficient, they could lead to scanning issues, especially depending on the user’s device or the conditions in which the QR code is scanned.

Dimensions that are smaller than this, such as 80x80px or 100x100px, might not provide the clarity necessary for reliable scanning. Even the option of any square dimensions above 75px, while flexible, could still result in sizes that are suboptimal for user experience in the context of gift cards. Therefore, the specified 120x120px dimension is the best choice to accommodate both visual clarity and user convenience.