When the file is edited, we sometimes watermark the file in order to protect the file and not allow others to use it for other purposes. So, how do you watermark the PDF file? Easy to implement with the Quick PDF Editor.
Once the Quick PDF Editor is installed on the computer, run the software.
Second, click the "Open" button in the upper left corner of the software interface to select the PDF file you want to edit.
Third, click "Document", in the drop-down menu, click "Watermark-Add".
In the pop-up "Add watermark" window, set the watermark type, shape, layout options and page range, click "OK".
With these methods, you can add watermarks to PDF files. If you need to add a watermark or a background to your document, you can also set it on the Software menu bar, in the dropdown options for documents.
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Quick PDF Editor to add watermark tutorials to PDF files