IMPORTANT:
To be able to sign a PDF document, it is necessary to have a digital certificate installed on your computer, such as the idCAT Certificate. Remember that the idCAT Mobile is not a digital certificate.
With the idCAT certificate installed on your computer, open the PDF with Adobe Acrobat (Reader or DC) and follow these steps:
1. Go to "Tools" or "All tools" and select "Certificates" or "Use a certificate":
If you can't find it, you can also search with the magnifying glass:
2. Select “Sign digitally” and accept the dialog box
3. Select the space where you want to insert the signature, dragging the mouse around the document.
4. Select below your idCAT certificate with which you want to sign:
5. Finally, the signature will look like this: