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.
How to use Watermark PDF: Open 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. Everything runs inside your browser, so your data never leaves your device.
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 Filevane 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 Watermark PDF
- Open 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 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. 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.
Network activity: none. Nothing is sent and nothing is fetched. This tool makes no network request at all once the page has loaded — which is why it keeps working if your connection drops.
You do not have to take that on trust — our privacy proof page publishes the Content-Security-Policy that enforces it, lists every third party it permits, and shows how to verify the whole claim yourself.
We also measured the competition. Our PDF upload audit recorded how many bytes each of 20 online PDF tools actually transmits: 12 of the 13 measurable services uploaded the whole test file, and Filevane transmitted 0.00 MB.
Learn more
Why Browser-Based Tools Are Safer for Your Files — Most online converters upload your files to a server. Client-side tools don't. Here's why that difference matters for privacy.
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.
Related tools
See all free pdf tools or browse the full tool catalogue.