Skip to content
Butter Tools Logo
Butter Tools

Add Watermark to PDF

Stamp a text watermark across every page — diagonal, tiled or centered.

Drop a PDF here or click to upload

Stays on your device

menu_book

How to Use Add Watermark to PDF

To add a watermark to a PDF, upload your file and type your watermark text — such as 'CONFIDENTIAL', 'DRAFT', or your company name. Customise the opacity, rotation angle, font size, text colour, and tiling pattern to control how the watermark appears across each page.

Click Add Watermark and the tool stamps the text onto every page of the PDF in your browser. Download the watermarked PDF. This is useful for marking documents as drafts, confidential materials, or for branding all pages of a document with your organisation's name.

help

Frequently Asked Questions

What is a PDF watermark used for? expand_more

PDF watermarks are used to mark documents as DRAFT, CONFIDENTIAL, or COPY, to brand documents with a company name or logo text, to indicate ownership, or to discourage unauthorised copying and redistribution.

Can I control the opacity of the watermark? expand_more

Yes. Adjust the opacity slider to make the watermark more or less transparent. A low opacity (10–20%) creates a subtle background mark that does not obscure the main content.

Can I rotate the watermark text diagonally? expand_more

Yes. Set the rotation angle to 45° for the classic diagonal watermark look. Any angle from 0° (horizontal) to 90° (vertical) can be set.

Can I watermark only specific pages? expand_more

The tool applies the watermark to every page of the PDF. For selective page watermarking, you would need to split the PDF first, watermark the relevant pages, then merge them back.

Is my PDF uploaded to a server? expand_more

No. The watermark is added entirely in your browser. Your PDF file never leaves your device.