On iPhone with Nimbo
How to add a watermark or page numbers to a PDF on iPhone
Short answer
To add a watermark to a PDF on iPhone, open it in Nimbo, tap PDF Tools, then Watermark, type the text (for example CONFIDENTIAL) and apply it. In the same menu, Page Numbers adds numbering to every page.

Step by step
- Open the PDF in Nimbo.
- Tap PDF Tools, then Watermark.
- Type the text and choose how it appears.
- Tap Page Numbers to number the pages.
- Save a copy and Share it.
Why Nimbo
- Discourage copies of drafts and quotes.
- Numbering for long documents.
- The original stays untouched.
Frequently asked questions
Can the watermark be removed?
It is drawn into the pages of the copy you share.
Can I watermark scans?
Yes, any PDF in your Library.
Is it part of Pro?
Watermark and Page Numbers are PDF Tools in Nimbo Pro.