Converting scanned images (jpg. or PDF) that contains text into editable text that word program can open it.?

I have a book presentation (should be submitted on the power point) and the book is a PDF file. I heard about a soft ware that converts any scanned text or PDF file into real text that can be edited on the word or power point. So is it real? Is that software available FOR FREE? P.S. on the PDF file the text... show more I have a book presentation (should be submitted on the power point) and the book is a PDF file.
I heard about a soft ware that converts any scanned text or PDF file into real text that can be edited on the word or power point.
So is it real?
Is that software available FOR FREE?
P.S. on the PDF file the text selection tool did not appear as usual
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