Useful capabilities
What the tool can do
The tool uses modern browser document libraries, so routine processing can happen without uploading the selected PDF to OceanofTools.
Private browser-based PDF processing
Add Watermark to PDF
Place a low-opacity text or logo overlay on selected PDF pages to identify or discourage unauthorized copying.
Local processing
No signup
Mobile friendly
Free
Processing...Preparing your file
0%
Your file is ready
Your processed file will appear here.
Simple workflow
How to use Add Watermark to PDF
- 1Choose your file
Select the document you want to process.
- 2Set the options
Choose pages, quality, layout or other settings.
- 3Download the result
Process the file and save the new document.
Honest limitations
What to know before converting
- The watermark is added as a PDF overlay. Low opacity helps it sit visually behind readable content, but it is not inserted beneath every existing content stream.
Frequently asked questions
Add Watermark to PDF FAQ
Is this PDF tool free?
Yes. It is free to use and does not require an account.
Are my files uploaded?
The selected files are processed locally in your browser. The HTML-to-PDF URL importer downloads only the public webpage URL you enter.
Does it work on mobile?
Yes, although large files process more reliably on a desktop device with more memory.
Found a problem?
Tell us the browser, device and file type that caused the issue.