Watermark

Add text or image watermarks to your PDF with adjustable opacity and placement. ClaudPDF processes your document entirely in your browser, so your files are never uploaded anywhere.

Use the Watermark tool for free with no sign-up, no watermarks and no waiting queues. Drop your PDF in, pick your options, and download the result in seconds.

Because everything runs locally with WebAssembly, Watermark works on Windows, macOS, Linux, Android and iOS — and your document never leaves your device.

How to use Watermark

1. Open the Watermark tool and drop your file into the upload area.
2. Adjust the available options to match what you need.
3. Click the process button — the work happens instantly in your browser.
4. Download your finished file.

Frequently asked questions

Is Watermark free?

Yes. Watermark is completely free with no sign-up, no watermarks and no file limits.

Are my files safe when I use Watermark?

Yes. Watermark runs entirely in your browser, so your files are never uploaded to a server.

Do I need to install anything to use Watermark?

No. Watermark works directly in your web browser on any device — desktop or mobile.

Related tools: Rotate PDF · Edit PDF · Page Numbers · Crop PDF