Add watermark to PDF
Add text as a watermark on every page of a PDF.
How to useWatermark the PDF.
Choose or drag the PDFThe file never leaves your device.
Available in: 
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Add watermark to PDF: what it is for
The tool adds a text watermark, like CONFIDENTIAL or COPY, to every page of the PDF, with size, color, opacity and a diagonal option.
The PDF isn't uploaded to any server: everything happens in your browser, which keeps contracts and documents private.
How to use
- Upload the PDF.
- Type the text and adjust the look.
- Download the watermarked PDF.
When to use it
- Protecting documents you send.
- Marking drafts and copies.
- Labeling course materials.
Frequently asked questions
Is the PDF uploaded to a server?
No. The file is processed in your browser and never leaves your device. You can use it with confidential documents.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.