← All Tools
💧
Watermark PDF
Add a text watermark to every page
💧
Drop .pdf files here
or click to browse
How it works
- 1. Upload your .pdf file
- 2. Enter your email address
- 3. Download your converted file
About Watermark PDF
Watermarking your PDF is the quickest way to mark a document as a draft, protect confidential content, or brand your work before sharing. PDF Ninjas adds your custom text diagonally across every page of your PDF — semi-transparent so the underlying content remains readable. Common uses include marking documents as "CONFIDENTIAL", "DRAFT", "DO NOT COPY", or adding your company name.
Frequently Asked Questions
Can I customise the watermark text?▾
Yes — you can enter any text you like. Common examples: CONFIDENTIAL, DRAFT, SAMPLE, DO NOT COPY.
Where does the watermark appear?▾
The watermark is placed diagonally across the centre of each page at a semi-transparent opacity so the content underneath remains visible.
Can the watermark be removed after adding it?▾
The watermark is embedded into the PDF. While specialist tools may be able to remove it, it is not easily reversible for most users.
Is the watermark added to every page?▾
Yes — the watermark is applied to every page of the PDF.