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The goal is, given the coords of a region, extract the text contained in that area form pdf?

The only plan i have now is convert to image and then ocr...

It's not possible to specify co-ordinates and then only extract text from that page area, but it is possible to extract all text from a page using the GetPageText function, along with the co-ordinates for each word, and then to query the CSV string that is returned to only pick out words that were located within a specific area of co-ordinates.

So what you're trying to do is possible, but you need to approach it from the opposite direction.