Add Watermark to PDF
Put text such as "CONFIDENTIAL" or "COPY" across every page of a PDF. Your file is not uploaded.
Processed on your device – your files are not uploaded.
1. Choose PDF
Drop your PDF here
or choose a file from your device
PDF • up to 100 MBBefore you start
- Files
- Limits
- 1 file, up to 100 MB
- You get
- A PDF document with your watermark text drawn across every page.
3. Watermark added
How it works
- Choose your PDF. Drop or select a PDF up to 100 MB.
- Customize watermark. Type your text, select angle, opacity, colour, and size.
- Add watermark and download. The tool stamps the watermark across every page locally in your browser.
Limits
- One PDF at a time, up to 100 MB: Processed locally on your device.
- Drawn over page content: The watermark is stamped over the page content and can be removed by someone with a PDF editor. It is a visual label, not encryption or copy protection. To lock your document with a password, use Protect PDF.
- English letters, numbers and common symbols only: Other scripts are not supported yet.
- Password-protected files: A PDF with a password must be unlocked first before adding a watermark. Use Unlock PDF to remove the password.
Check it yourself: your file is not uploaded
- Choose your PDF file on this page.
- Turn off Wi-Fi or mobile data.
- The tool still adds watermarks and saves the result because all processing occurs entirely within your browser.
On a computer, press F12 to inspect Network activity and confirm no request transmits your PDF.
Add a watermark to PDF pages on your device
Add Watermark stamps text such as CONFIDENTIAL or COPY across every page of a PDF document. You can set the angle (diagonal or straight), opacity (15%, 30%, or 50%), size, and colour (grey, red, or blue).
All processing takes place locally in your web browser. Your file is never uploaded. The watermark is drawn directly over the page content and can be removed by someone with a PDF editor. It is a visual label, not encryption or copy protection. To lock your document with a password, use Protect PDF.
Frequently Asked Questions
Does a watermark protect my PDF from being edited?
No. A watermark is a visual label drawn over the page content, not copy protection. Anyone with a PDF editor can remove it. To secure your document with a password, use Protect PDF.
Is the watermark placed in front of or behind the page content?
The watermark text is drawn over the page content with your chosen opacity (15%, 30%, or 50%).
What characters can I use in the watermark text?
You can use up to 60 characters consisting of English letters, numbers, and common punctuation symbols.
Can I watermark a password-protected PDF?
No. If your PDF has a password, unlock it first using Unlock PDF before adding a watermark.