Watermark PDF
Stamp a diagonal text watermark across every page of your PDF. Tune the opacity, size and color in your browser.
Drop your PDF here
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How to add a watermark to a PDF
- Upload the PDF you want to watermark.
- Type the watermark text you want to stamp on every page.
- Adjust the opacity, font size and color.
- Click Watermark PDF and download the marked document.
FAQs
Is my PDF uploaded to a server?
No, the watermark is applied in your browser, so your document never leaves your device.
Can I use a logo instead of text?
This tool adds text watermarks. For images, consider an image editor before converting to PDF.
Does the watermark appear on every page?
Yes, the diagonal watermark is stamped onto every page in the document.
Can I make the watermark very subtle?
Yes, use the opacity slider to control how visible the watermark is on each page.
Related Tools
Why use Watermark PDF?
Use Watermark PDF to mark a draft as CONFIDENTIAL or stamp your brand name across every page before sharing. A diagonal text watermark at a low opacity keeps the content readable while making the document clearly labeled.
- Mark a draft as CONFIDENTIAL before sending it out.
- Stamp your brand or document title on every page.
- Discourage unauthorized redistribution of preview or client documents.
Tips and Limits
The watermark is a diagonal text overlay drawn onto every page in your browser with pdf-lib. Use the opacity slider to keep it visible without hiding content, and note that the watermark becomes a permanent part of the PDF once the file is shared.