ArtQRCode put pictures and url or message in QR codes,the QR codes can be read by any QR reader。You can select 21-177 pixel size to generate a QR code, and Youd better select similar size image put into QR code, If the size is too large ,it will cause the loss of image detail。
Note: Due to the app use low-level error correction, when qr code reader pick box is too small, and the large size of the QR code, it will lead QR code reader can not distinguish between adjacent pixels, the contents can not be read by QR reader。