Signing PDF documents

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Please note that signing PDF files is only possible with the old (Sectigo) DFN certificates. HARICA certificates cannot be used for this purpose. To sign electronic documents, follow the instructions for signing documents electronically.

Please click on "Tools" in the opened PDF file.

Tools buttonImage: University of Kassel
Tools button

Please select "Certificates" and click on "Open".

Open certificatesImage: University of Kassel

You will receive an additional menu bar Certificates. Please click on "Sign digitally".

Sign digitally buttonImage: University of Kassel

A window opens in which you are asked to draw a frame in the file with the mouse. The signature will be displayed in this frame. Please click on "OK".

Message Drag frame with mouseImage: University of Kassel

The frame could look like this.

Image: University of Kassel

Carry out the following steps in the next window:

  1. Under "Sign as", click on the downward-pointing arrow and select the relevant certificate.
  2. Then click on "Sign" to confirm.
Image: University of Kassel

You will now be asked to rename the file with a "file name" of your choice. Then click on "Save".

Image: University of Kassel

In the new window, you will be asked for permission to use a key:

  1. Under "Key name", select "Grant authorization".
  2. Confirm the selection with "OK".
Image: University of Kassel

You will now see the signature you have created on the PDF file in the frame you inserted previously.

Image: University of Kassel