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Sign Documents in Adobe Acrobat

1. Open Document

You must open your PDF in Adobe Acrobat. From the left navigation, go to: All Tools → View more → Use a certificate → Digitally sign

This initiates a digital signing mode.

2. Sketch the Signature Area

Click and drag the mouse in the area where you want your signature to be displayed. A pop-up window will appear, prompting you to select, create, or import your Digital ID.

If your certificate is installed on the system, Acrobat will automatically detect it. If that's not the case, choose "Configure New Digital ID" to import a certificate.

3. Create/Select Digital ID

You have the following options:

  • eToken Certificate(s) (using a hardware signing token)
  • Cloud or PFX-based Certificate(s) (using an ID that is stored or managed locally)

Follow the directions provided on the application. If prompted, enter your token password (your private key PIN) if you have one to authorize signing the document.

Also Read: How to Know if You Had a DMARC Failure Happened? Learn How to Fix

4. Change Signature's Appearance

Before you submit your signature, you can:

  • Change how your signature appears (name, logo, timestamp, etc.)
  • Create new appearances using or saving a preset
  • Lock the document after you have signed it so that it is not changed after signing it.

When you're ready, select Sign.

5. Save and Timestamp Signed Document

Once completed, Acrobat will instruct you to pick a location to save the signed document. It is best practice to add a trusted timestamp to maintain long-term validity (LTV):

  • Choose Use a certificate → Timestamp
  • Add a new timestamp server. For example: http://timestamp.digicert.com
  • Set as default, if applicable; resign the document

Timestamping automatically keeps your signature valid if your certificate were to ever expire - great practice for legal and compliance work.

6. Verify the Signature

After you save, your document will contain a ribbon icon or signature badge at the top.

Click on "View Signatures" or "This document has signatures" to see signer information, timestamps, and certificate trust levels.

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