QR Code
A two-dimensional barcode that encodes information such as URLs or text into a square pattern of black and white modules, readable by smartphone cameras.
A QR (Quick Response) Code is a two-dimensional barcode that encodes information into a square matrix of black and white dots. Developed by Denso Wave in Japan in 1994, it can store URLs, text, contact information, and Wi-Fi credentials. Its ease of scanning with smartphone cameras has driven worldwide adoption.
For image format, PNG and SVG are ideal choices. PNG works well for print materials, while SVG scales without degradation for posters and signage. Minimum size should be 2cm square, with adequate white space (quiet zone) around the code to ensure reliable scanning.
When embedding QR codes on websites, the image compression tool can reduce file size while maintaining sufficient quality to keep modules crisp. For high-resolution print versions, the image upscale tool can enlarge codes without blurring.