QR code size: when details matter

The actual size of the QR code doesn’t matter. It’s important to pay attention to the very lines and points that the code consists of. It is these details that determine whether your code will be readable by a smartphone camera and a QR scanner.

Even if you decide to make a QR code using a link, a file, or other content, but don’t take into account the final resolution of the image for scanning, the code will probably not function. Due to the limited smartphone cameras functionality, no user will be able to scan a QR code with length and width smaller than 1 cm.

- the amount of data encrypted in your code. The more data, the more rows and columns are needed, which means that the code will have a more complex visual structure;
- borders of the image. In terms of design, the frame doesn’t provide substantial benefits. But if we talk about QR code performance, it’s better to add it for better contrast;
- spacing between rows and columns. It’s important to keep the right distance between the dots so that they don’t merge when the size of the image is reduced;
- the QR code color. The black and white design with maximum contrast is ideal for scanning. The palette of bright colors in the QR code perfectly emphasizes the corporate identity of the brand but can impair the code’s readability.