You can add a handwritten signature or an electronic signature to a PDF using UPDF.
Click the Comment icon on the left toolbar to enter the annotation mode.
Move your mouse to the Signature icon. Then you need to click the Create Signature button.
You can add signatures to your PDF document quickly with three methods:
You can adjust the thickness of the signature by clicking the Thickness icon.
You can change the color of the signature by clicking the Color icon.
After creating the signature, you can place it anywhere on the document you want. You can also resize the signature according to your needs.
Note: You can create and save four signatures under the signature icon. If you want to add a new signature, simply remove one first.