Watermark PDF Online for free
Add text such as DRAFT, CONFIDENTIAL or a custom label across your PDF pages. FreePDFNinja keeps the workflow deliberately simple: choose the file, set the option you need, run the tool and download the result.
Why use this tool?
It is built for common everyday PDF jobs without forcing you through an account creation flow. The dedicated tool page also makes it easier to bookmark and return directly to the PDF task you use most.
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Watermark PDF Online FAQs
Can I use custom watermark text?
Yes. Enter your own text up to 80 characters.
Can I change watermark opacity?
Yes. Choose a light, medium or stronger watermark.
Is the watermark added to every page?
Yes. This tool adds the selected text watermark to each page.