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Does anyone know how to scan a QR code that is on your screen? I am reading a online book with a QR codes and it is to much of a hassle to take another device to scan the codes.

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  • You can do it with a script, eg. an AppleScript that could form part of an Automator Quick Action. – CJK Jun 15 '20 at 14:09
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Yes, you can do this without another device:

  • Take a screen shot of your screen and make sure the QR code is captured properly. Crop to the QR code in the screenshot and save the image file using Preview.

  • Open this image file in an app like Barcode Scanner and QR Code Reader. (Alternatively, you can upload the QR image file to an online QR code reader).

  • The app will decode the QR and provide you the data.

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