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When dealing with scanned documents in PDF, the output file should not be much bigger than the input
40 votesThanks for the suggestion. We currently re-encode the image into the new PDF, which may change its size. Was the original black and white or greyscale rather than colour?
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Matthew Green
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2 votes
If you buy a full licence, we may be able to afford to make it work for you ;-)
Matthew Green
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8 votes
Thanks for this feedback, to be honest I hadn’t even considered this, so it’s good to know when there are issues.
We currently extract images from the source PDF, feed it through the OCR, and then reassemble a new PDF blind. This leads to the sort of problems that you are having. It would be quite a major architectural change to support updating an existing file, but I can see advantages, and will look into how it might be achieved.Matthew Green
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65 votesMatthew Green
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The original was black and white (probably compressed TIFF files within the PDF file). Perhaps you need a way for the program to take note of the original format of the images and re-compress them using the same algorithm, if recompress you must (i.e. if you can't transfer the original images from the original PDF to the new one without reprocessing them).