PDF virtual printer may be unfamiliar to many friends, thinking that it only has the function of converting document format. In fact, if you add watermark, you are also an expert. Let's see how it works.

First of all, we open the PDF virtual printer and click the settings icon in the lower right corner, as shown in the figure below:

After selecting the settings, we can see that there are many functions in the toolbar on the left. We choose to modify the watermark.

After selecting the watermark function, we can set the watermark parameters, font, color and width.

After the setting is completed, you can save it directly.