How to modify and edit watermarks in PDF files

Editing and modifying PDF files requires the use of a PDF editor

Reference software: Swift PDF Editor

Reference steps: 1. Open Swift PDF Editing on the desktop and then open the PDF file in the editor

2. Select "Watermark" - "Manage" in the upper menu bar

3. Then a window for managing watermarks will pop up. , after selecting to add a new file, a window will pop up, and you can modify and edit the PDF file

4. After editing and modifying the PDF file, you can save it

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