How to digitally sign PDF document in Adobe Acrobat Reader?

There are several ways to sign a PDF digitally electronically. It depends on how often and how many documents you want to digitally sign. If the volume of documents is in units of pieces, at most tens per month (eg contracts or invoices), the easiest and cheapest way is to sign PDF documents in Adobe Acrobat Reader DC, which is completely free (Windows and Mac). If you do not have Acrobat Reader, you can download it at this link. In this volume of signed documents, it is not worth investing in paid programs (which, in addition, usually have annual license fees). However, the advantage of paid programs can be saving time if you sign packages of tens or hundreds of documents every month - this way you can sign everything at once with using drag and drop. But we will show you how to sign PDF in Adobe Acrobat Reader.

Custom procedure:

  • In Adobe Acrobat Reader, open the PDF you want to sign (if you have the document only Microsoft Word, save it as PDF)
  • Scroll to the part where the document is to be signed
  • Click on Tools button in the top bar
  • Click on Certificates
  • Click on Digitally Sign button which appears on top
  • Drag the mouse (cursor) to select the area where the electronic signature is to be displayed
  • Finally, have click on Sign and, if necessary, enter your password (eg when you are using QSCD such as USB token or smart card).