Watermark PDF
Stamp a text or image watermark across a PDF with control over opacity, rotation, colour, font, position and tiling. Runs entirely in your browser — your file is never uploaded.
Select a PDF to watermark
Processed locally in your browser — never uploaded.
Stamp a text or image watermark across a PDF with control over opacity, rotation, colour, font, position and tiling. Runs entirely in your browser — your file is never uploaded. Watermark PDF is a free, browser-based tool in the Toolsnest pdf tools collection — there is nothing to install, no account to create and no watermark on your results. It works on desktop, tablet and mobile, and because the work happens on your own device it stays fast even with large inputs.
How to use the Watermark PDF
- Open the Watermark PDF — no sign-up or software download is required.
- Drag and drop your file(s) into the tool, or click to browse and select them from your device.
- Choose any options you need, such as order, quality, page range or output format.
- Click the action button and let the tool process everything locally in your browser.
- Download the finished file. Your originals are never changed or uploaded.
Why use the Watermark PDF?
- 100% free with no limits, no sign-up and no watermarks.
- Private by design — your files are processed in your browser and never uploaded to a server.
- Fast and lightweight, with instant results even on a phone or a slow connection.
- Works everywhere — any modern browser on Windows, macOS, Linux, Android or iOS.
- Part of a full pdf tools suite, so related watermark pdf tasks are one click away.
Is it private and secure?
Your privacy is built in. The Watermark PDF does all processing on your own device using client-side code, so your files are never transmitted, stored or seen by anyone — including us.
Frequently asked questions
Can I add an image or logo watermark?
Yes. Switch to the Image/Logo tab and upload a PNG (transparency works best), then set its size, opacity and position.
Can I tile the watermark across the page?
Yes — enable tiling for a repeating text watermark, or place a single watermark at any of nine positions.
Is my document uploaded?
No. Watermarking happens entirely in your browser.