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I need to digital sign a PDF document. However, Acrobat reader does not let me sign documents. I just need to sign the document, not edit it.

Do I need to buy the full Acrobat software?

Or is there a better, simpler way?

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See for an up-do-date answer as of Dec 30, 2014 – Dan Nissenbaum Dec 30 '14 at 21:09

There are a few options for digitally signing PDF files. You could use Acrobat Standard for this, but if all you want to do is to digitally sign PDF files then Nitro PDF or Foxit Phantom are more reasonably priced solutions (approx $99, cheaper if you find a special deal).

As far as free solutions go there is Signature995, which is supported by ads, so be warned.

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On PC - I used to add my signatures using PDF X-Change view

On Mac - I'm now using PDF Signer from ($10 on the mac store) to do it

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The free version of PDF X-Change adds a "DEMO" watermark when signing documents. The PRO version is $37.50 - – Dan Dascalescu Sep 24 '11 at 10:54

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