How to Add a Signature to PDFs with Mac Preview

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Lots of PDFs need signatures

If you've ever been asked to sign a PDF file, you know how tedious that can be. You have to print the PDF, sign it, then scan the PDF back into your computer so you can mail it back to the recipient. But with Preview, Mac users can easily capture their signature with their Mac camera and then use that to sign documents. Here's how to sign a PDF with the Mac OS X Preview app.

1. Double click the PDF you need to sign to open the Preview application.

Open the PDF

2. Navigate to Tools > Annotate > Signature > Create Signature from Built-in iSight...

Create your signature

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3. Sign your name on a piece of white paper, and hold it up to your iSight camera. When the Signature Preview looks good, click Accept.

Hold it up to your camera

4. Position the cursor where you want the signature to appear.

Place your signature

5. Go to Tools > Annotate > Signature > Manage Signatures to add additional signatures or re-use the one you just saved.

manage your signatures

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Jennifer Kyrnin
Jennifer Kyrnin,
Jennifer Kyrnin has been building websites since 1995, and teaching others how to do it since 1997. She's written several books on the topic, and is probably working on another one right now. And she does it all on her beloved iMac and sometimes her MacBook Air.
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