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Can I add a watermark to a PDF on my phone?
Updated July 2026
Yes. Arthize runs in any modern mobile browser, so you can add a watermark to a PDF from a phone or tablet with nothing to install. Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose.
Answer
Yes. Arthize runs in any modern mobile browser, so you can add a watermark to a PDF from a phone or tablet with nothing to install. Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose.
More about watermark pdf
A watermark can be text or an image applied across every page.
Opacity and angle control how prominent the mark is.
Watermarks are useful for marking drafts and confidential copies.
How to add a watermark to a PDF
- 1
Open the watermark tool
Sign in and open the Watermark tool.
- 2
Add your PDF
Upload the document to stamp.
- 3
Design the watermark
Set the text or image, opacity, angle and position.
- 4
Download
Get a watermarked PDF.
Common questions
- How do I add a watermark to a PDF?
- Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose. On Arthize it's free with no watermark and processed privately.
- Can I add a CONFIDENTIAL stamp to every page?
- Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose. On Arthize it's free with no watermark and processed privately.
- Is adding a watermark free?
- Adding a watermark stamps text or an image — like DRAFT or CONFIDENTIAL — across every page at the opacity and angle you choose. On Arthize it's free with no watermark and processed privately.
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