How do I add a digital certificate to a PDF?

To add a digital certificate to a PDF signature in Adobe Acrobat, you'll need to follow the next steps.

1. Open Adobe Acrobat
2. Upload your PDF
3. Go to Tools
4. Scroll down to Forms and Certificates
5. Select “Open”, under “Certificates”
6. Select “Digitally Sign” on the top bar
7. Click Configure New Digital ID.
8. Fill in the relevant data
9. When you’re done, click Sign → Apply the signature

That's it. Now your signature comes with a digital certificate!