PDF Utilities
Watermark PDF Online
Draws centered Helvetica text on each page. Size, opacity, and angle can change. The color is fixed, and the PDF is not uploaded.
How to use Watermark PDF
- Choose a PDF and enter a watermark.
- Adjust size, opacity, and angle.
- Download and inspect light and dark pages.
A practical example
Use a low-opacity DRAFT label to identify an internal review copy.
What to check before using the result
A watermark is not encryption or access control. It cannot prevent copying or guarantee document ownership.
Local processing
Inputs are processed in this tab. The site and some engines still load network assets.
Inspect before sharing
Review the output and keep the original file. Large files may take longer to process.
No account needed
No account, API keys, or watermarks required.