Watermark PDF
Diagonal text stamp, opacity control.
How to use
Choose PDFs in Watermark PDF: set Text and Opacity %, press Run, and PaperFlux processes the selected file in your browser with pdf-lib and pdf.js engines loaded lazily — progress and cancel are available where supported. You get a result and a download when processing succeeds; the selected file is not sent to a Tolari processing endpoint.
Steps
- Use the embedded Watermark PDF on this page (or open the full tool).
- Set Text and Opacity % PDFs.
- Press Run (Ctrl+Enter) and follow progress if shown.
- Download the result, or share a link to this tool.
FAQ
Is Watermark PDF really free?
Yes. No account or credits are required, and no paywall blocks the task. Browser, device, and stated file-size limits still apply. Ads may appear only when configured and enabled after the required consent signal.
Do I have to upload my files to use Watermark PDF?
No. This tool reads and processes the selected file in your browser with pdf-lib and pdf.js engines loaded lazily; the implemented flow does not send it to a Tolari processing endpoint. The page may still request scripts or other resources from configured third parties.
What should I enter in "Text"?
Put your text here — for example: DRAFT. Leave the defaults first to see how it works, then adjust. Every field is validated with a plain-language message if something is off.
How should I compare Watermark PDF with other options?
Compare supported inputs, output quality, file-size limits, browser compatibility, and privacy terms using the same sample. Provider features and terms can change; check their current documentation.
How accurate is Watermark PDF?
This tool computes in your browser when run. Results depend on the selected inputs, browser support, and the specific operation.
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Compare before choosing
Compare supported inputs, output quality, limits, browser compatibility, and privacy terms before choosing a tool for merging, splitting and converting PDFs. Feature checklist.