100% free PDF tool
Add Watermark
Stamp text across every page. Control the wording, angle, opacity and colour.
No signup requiredRuns in your browserFiles auto-deleted
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How to add a watermark to a PDF
Upload a PDF, type the text you want stamped across it, then set the angle, opacity, size and colour. Choose a single centred mark or tile the text across the whole page so it cannot be cropped away. The watermark is drawn into the page content itself, which is what makes it stick, and the entire operation runs in your browser so the document is never uploaded.
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FAQ
Frequently asked questions
Everything you might want to know before you upload.