GuestGUEST
10 uses remaining
Drop a PDF here or browse
One PDF file · Max 40 MB · for higher limits
Add a diagonal text watermark to every page of your PDF. Processed entirely in your browser — nothing is uploaded.
GuestGUEST
10 uses remaining
Drop a PDF here or browse
One PDF file · Max 40 MB · for higher limits
Watermark PDF stamps a custom diagonal text watermark on every page of your PDF document. Use it to mark documents as CONFIDENTIAL, DRAFT, SAMPLE, or any text you choose. It's ideal for protecting intellectual property, branding shared documents, or visually indicating a document's status. The watermark's color, size, opacity, and angle are all fully customizable.
Upload your PDF, type your watermark text, then adjust the font size, opacity (how transparent it appears), rotation angle, and color using the controls. A live preview shows how the watermark will look before you apply it. When ready, click "Add Watermark & Download" — the tool uses pdf-lib in your browser to draw the text on every page and downloads the result instantly.
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