We already have a program available that can read out pictures from PDF files.
Augmenting this program to also scan for QR codes in the input file should be pretty straightforward.
On the attached screenshot, no QR codes are visible - please do send us an example file that contains the QR codes.
We can output the found information in whatever format you prefer.
Would you like to get the QR codes themselves as pictures?
Or just a list of the text fields / URLs that they represent? (This could be exported as CSV, or Excel, or something similar.)
You can see some examples of our previous projects here:
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Have a great day!
Tom Moya Schiller