: If you have a QR code saved as an image on your computer, you can upload it directly to an online reader rather than trying to scan your monitor with a phone. How Online QR Code Scanners Work
: Unlike mobile apps, online readers work instantly on any device with a browser, saving storage space and time. qr code reader online
QR codes are two-dimensional barcodes that store data in a grid of black and white squares (modules). Online readers use your device’s camera or an uploaded image to: What is a QR code and are they safe? - Kaspersky : If you have a QR code saved