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We have here a large industrial printer/copier that also scans pages into PDFs. Unfortunately it scans crookedly, just a little bit.

I know there is software out there that straighted out images. Is there something that will do the same for PDF files?

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Considering how PDF works at a programmatic level I say you are better off buying better hardware. There is no such thing as a line in PDF. Everything works off of coordinates. At best a programmatic solution would work in most cases, but not all. – P.Brian.Mackey May 31 '11 at 18:54
don't know how old this forum is. i was wondering the same thing and it turns out that you can "optimize scanned pdf" on acrobat pro. you can find that under the "document" menu. hope this helps. – user102364 Oct 21 '11 at 2:32
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4 Answers

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I believe that Adobe Acrobat can rotate pages, otherwise I know Photoshop can, but that would be one page at a time.

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"Optimize Scanned PDF" under Document will straighten out the pages.

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up vote 1 down vote

There is a setting in adobe acrobat that does OCR for the pages. Part of the OCR process is straightening. I do not know if it exists as its own process/program.

  1. if it's a scanned document then 'Optimise Scanned PDF' under the Document menu will attempt to correct (only if there's just one scanned object on the page)

From the Adobe forums, might still work, at least worth a shot.

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I personally would export the images (Acrobat Standard or Pro can export all bitmaps from a PDF, or use pdftk (www.pdflabs.com/tools/pdftk-the-pdf-toolkit). Correct the images using whatever photo editor you normally use, then create a new PDF (using either of the tools above).

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This should work, but the OP seems to be looking for an automated solution rather than a manual process. – P.Brian.Mackey May 31 '11 at 20:16
There are various image editors that can batch-fix slightly rotated images. There are also ways to batch-import pics and make a new PDF. Granted it's not a perfect solution. – CarlF Jun 1 '11 at 12:57
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