Sign a PDF with an AATL Certificate - Acrobat Reader DC

Feb 8, 2023


This article will walk you through signing a PDF in Adobe Reader DC. The instructions are the specific for an Adobe AATL certificate to sign. GlobalSign's PDF Signing certificates attest to the identity of the signer and secure your PDF documents from modification.

Signing Instructions

You can watch the video below for a tutorial. 

Or, you can check the step by step guidelines below. 

  1. Open the PDF you wish to sign in Adobe Reader DC. 
  2. Click the Tools button towards the top left, then click Certificates:

  3. Next click the Digitally Sign button.

  4. Click OK to drag a signature rectangle:

  5. Drag a signature rectangle where you would like your signature to appear:

  6. When you release the signature rectangle, a window will appear with signing options. Choose your signing certificate from the drop down menu. You may optionally customize the appearance of your signature.Click Sign.

  7. You will be prompted to re-save your document. You may either replace the existing file or save it under a new name. Click Save

  8. Next enter the password for your AATL or CDS certificate:

  9. Once the signature is placed you will see your signature on the document and the "Blue Bar" will be activated showing that your signature is valid:


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