Add a watermark to a PDF — without uploading it
Mark the PDF with CONFIDENTIAL, DRAFT or COPY, or with your logo — once in the center or tiled across the page.
The watermark is applied in your browser: the PDF never leaves your computer and there’s no watermark of ours.
How to watermark a PDF
Open the PDF and type the text or choose an image such as your logo. Adjust color, opacity, angle and size while watching the preview, then download the marked PDF.
Choose a single watermark in the center or a tiled pattern that covers the whole page, and apply it to every page or just a range.
Works in any language
The watermark text is drawn as an image, so it works with any alphabet and can’t simply be selected and deleted like regular text.
Frequently asked questions
How do I add a watermark to a PDF?
Open the PDF, type the text or pick an image, adjust it in the preview and click “Add watermark and download”.
Can I use my company logo?
Yes. Choose “Image” and upload a PNG, JPG or WebP. A PNG with a transparent background looks best.
Can the watermark be transparent?
Yes. Opacity goes from 10% to 90%; 20–35% keeps the text readable.
Is my PDF uploaded?
No. The watermark is applied in your browser.