Provide OCR capabilities when importing a PDF

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When importing a PDF file, it would be very useful if Keypoints could trigger optical character recognition (OCR) to ensure that the PDF contains a readable text layer.

There are various OCR libraries available, like the open source Tesseract or commercial web services such as from ABBYY. It will also depend on license & pricing if one of these could be used with Keypoints.

Note that support for OCR is rather a long-term goal.

Workaround: Users who also use some other OCR-capable app (like DEVONthink Pro) could first import the PDF into that app and let it perform the OCR, then drag the PDF over to Keypoints for further annotation & highlighting.