Add a watermark to a PDF for free
This free watermark tool stamps text or an image across every page of a PDF, entirely inside your browser. Type a word such as CONFIDENTIAL or DRAFT, or upload your logo, then control the opacity, size, angle, and position — center, diagonal, a tiled repeating pattern, or a corner. When you are happy, download the watermarked PDF.
Because everything runs locally with JavaScript, your document is never uploaded to a server, which keeps it private. Watermarks are useful for marking drafts, protecting ownership of documents, or branding reports and proposals. It works on desktop and mobile and runs offline once loaded.
How to watermark a PDF
Add your PDF, choose Text or Image, set the appearance with the sliders, pick a position, and press Add watermark to download the stamped file.
Frequently asked questions
Is my PDF uploaded to watermark it?
No. The watermark is applied entirely in your browser. Your file never leaves your device or gets stored.
Can I use my logo as a watermark?
Yes. Switch to the Image tab and upload a PNG or JPG. Transparent PNG logos work best.
Does the watermark go on every page?
Yes. The watermark is applied to all pages with the same settings.
Can I control how visible it is?
Yes. Use the opacity slider for a faint or strong stamp, and the size and angle sliders to fit your page.
Does it work on my phone?
Yes. It is fully responsive and works in mobile browsers on iPhone and Android.