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How to Sign a PDF on Mac

This wikiHow teaches you how to sign a PDF on a Mac computer using the trackpad (on MacBook laptops), or by capturing an image of your signature on paper using Mac's camera. [1]

Method 1
Method 1 of 2:

Using the Trackpad

  1. By default, PDF files will open with the Mac's Preview app. It comes pre-installed on Mac OS X Lion and above. Double-click the PDF file to open it with your default PDF viewer.
    • If your PDF files open with another program instead, right-click on the PDF file (click the PDF files with both fingers on the trackpad), select "Open With" and click "Preview".
  2. It's the button in the top menu bar that resembles a marker tip. It's at the top of the PDF, next to the search bar. This will display a bar with some tools at the top of the document.
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  3. It's the signature button that resembles a signature on a faint line. You will see a drop-down menu appear below the Signature button.
  4. It's at the bottom of the drop-down menu under the Signature button.
  5. It's the first tab at the top of the popup window. If you don't have a TrackPad, this option will not be available.
  6. You will see your signature in the popup window as you draw.
  7. It's in the lower-right corner of the popup window. This will save the signature under the Signature button.
    • If you don't like how your signature looks, click "Clear" and draw your signature again.
  8. This will open a drop-down menu with all the signatures you've saved previously.
  9. Use the mouse or TrackPad to the place where you want the signature to go.
    • Click and drag the blue dots in the corner of the signature to resize the signature image.
  10. It's in the menu bar in the upper-left corner of the screen. This will display the dropdown File menu.
  11. It's in the File drop-down menu. This will save the PDF with the signature.
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Method 2
Method 2 of 2:

Using the Camera

  1. By default, PDF files will open with the Mac's Preview app. It comes pre-installed on Mac OS X Lion and above. Double-click the PDF file to open it with your default PDF viewer.
    • If your PDF files open with another program instead, right-click on the PDF file (click the PDF files with both fingers on the trackpad), select "Open With" and click "Preview".
  2. It's the button in the top menu bar that resembles a marker tip. It's at the top of the PDF, next to the search bar. This will display a bar with some tools at the top of the document.
  3. It's the signature button that resembles a signature on a faint line. You will see a drop-down menu appear below the Signature button.
  4. It's at the bottom of the drop-down menu under the Signature button.
  5. It's the second tab at the top of the pop-up window. The popup window will display what the camera sees.
  6. Use a pen or marker to draw your signature on white paper.
  7. Hold the sheet of paper still for a few seconds. Your Mac will read your signature on the paper and draw it in the popup window.
  8. It's in the lower-right corner of the popup window. This will save the signature under the Signature button.
    • If you don't like how your signature looks, click "Clear" and draw your signature again.
  9. This will open a drop-down menu with all the signatures you've saved previously.
  10. Use the mouse or TrackPad to the place where you want the signature to go.
    • Click and drag the blue dots in the corner of the signature to resize the signature image.
  11. It's in the menu bar in the upper-left corner of the screen. This will display the File drop-down menu.
  12. It's in the File drop-down menu. This will save the PDF with the signature.
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      References

      1. ↑ https://www.macrumors.com/how-to/digitally-sign-a-pdf-using-preview-on-mac/

      About this article

      Article Summary X

      1. Open the PDF in Preview.
      2. Click the pen button.
      3. Click the signature button.
      4. Click Create Signature .
      5. Click Trackpad .
      6. Draw your signature and click Done .
      7. Click the signature button.
      8. Drag the signature to the desired spot.

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