Edit & Sign · 100% Free

Add a Watermark to a PDF

Stamp text like "CONFIDENTIAL" or a logo across your pages.

Select a PDF to watermark

or drag and drop them here

About the Watermark PDF tool

100% private: This tool runs entirely inside your web browser. Your files are never uploaded to a server — they never leave your device. That makes it faster, and it means your documents stay completely confidential.

How to watermark a PDF

Upload your PDF, type your watermark text (or upload a logo), then adjust its size, angle, opacity, and position before downloading the watermarked file.

Frequently Asked Questions

Can I use a semi-transparent watermark?

Yes. You control the opacity so your watermark can sit lightly behind the content or stand out boldly.

Related PDF tools

PDF

Add Page Numbers

Number your pages with control over position and format.

Open tool→

PDF

Edit PDF

Edit detected or OCR text, delete text, add images, and mark up your PDF.

Open tool→

PDF

Sign PDF

Draw, type, or upload a signature and drop it onto your document.

Open tool→