How to add your personal signature to a PDF document?

In the first step, open the Lightning PDF Editor and select "Open" - "Browse" to add the file in open form.

The second step, after adding it, select the "Open" button at the top of the interface, click "Signature Document" at the bottom, and move the mouse to select the location of the signature.

The third step is to select the certificate in the pop-up window. Here you can create the certificate yourself, as shown in the figure.

The fourth step is to set the reason, location, contact information and permissions of the signature after creation. Click Manage to add a picture signature.

The fifth step is to click Save after all settings are completed, and set the file name and storage location in the pop-up interface.