IMPORTANT:

To be able to sign a PDF document, it is necessary to have a digital certificate installed on your computer, such as T-CAT on card or T-CAT P. In the case of T-CAT on card, check if you have correctly configured your computer* for using the card and remember that you must have the card inserted in the reader.

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":

highlighted selection of using the certificate

If you can't find it, you can also search with the magnifying glass:

search in the magnifying glass use the certificate

2. Select “Digitally Sign” and accept the dialog box

select the option to digitally sign and accept

3. Select the space where you want to insert the signature, by dragging the mouse across the document.

drag the mouse to select the signature space

4. Select below your T-CAT certificate with which you want to sign:

Untitled.png

5. Finally, the signature will look like this:

digital signature on a pdf document

According to current regulations, the holder's DNI must appear in the "Common name" field of certificates. If you want to hide it from the signature of a PDF, you can consult " How to hide the DNI from the T-CAT signature stamp in PDFs ?".

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