QR code scanner online is a tool which is used to read or scan QR codes and convert the encoded information into a readable format, such as a website URL, text, or other data. The patterns within QR codes represent binary codes that can be interpreted to reveal the code's data. No need to download any app.

A QR reader can identify a standard QR code based on the three large squares outside the QR code. Once it has identified these three shapes, it knows that everything contained inside the square is a QR code.