Add Watermark to PDF
Stamp a diagonal text watermark across every page of your PDF, right in your browser.
Your privacy is safe, this tool runs entirely in your browser. Nothing you enter is uploaded to or stored on our servers.
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How to use Add Watermark to PDF
- 1Choose your PDF file.
- 2Type the watermark text and adjust opacity and size.
- 3Click "Add Watermark".
- 4Your watermarked PDF downloads automatically.
About the Add Watermark to PDF tool
This free tool stamps a text watermark diagonally across every page of your PDF, perfect for marking documents as DRAFT or CONFIDENTIAL, or adding your brand name before sharing.
You control the text, opacity and size, and the whole process runs locally in your browser so your file stays private.
Frequently asked questions
How do I add a watermark to a PDF?
Choose your PDF, type the watermark text, adjust the opacity and size, then click “Add Watermark”. The watermarked PDF downloads instantly.
What kind of watermark can I add?
A diagonal text watermark such as DRAFT, CONFIDENTIAL, SAMPLE or your brand name is stamped across every page of the PDF.
Can I control how visible the watermark is?
Yes. Adjust the opacity and font size to make the watermark a subtle background mark or a bold, prominent stamp.
Is the watermark added to every page?
Yes, the text watermark is applied to all pages of the document in one step.
Are my files uploaded to a server?
No. The watermark is added in your browser, so your PDF never leaves your device, safe for confidential files.
Is the PDF watermark tool free?
Yes, free with no sign-up and no extra watermark from us, only the text you choose.