Add Watermark to PDF
Stamp a text watermark across every page of a PDF — custom text, color, opacity, size and angle. Free, runs entirely in your browser, nothing uploaded.
The watermark is applied to every page. Use lower opacity for a subtle background mark.
Everything runs locally in your browser — your PDF is never uploaded.
How to watermark a PDF
Upload your PDF, type the text you want — "Confidential", "Draft", your company name or a copyright line — then adjust the size, opacity, colour and angle. The watermark is stamped onto every page at once and you download the finished file. It's the quickest way to mark ownership or status across an entire document in one step.
Why add a watermark to a document
A watermark deters unauthorised reuse, signals a document's status (draft, approved, internal) and makes leaked copies traceable back to the source. A semi-transparent overlay keeps the text readable while clearly branding each page. The watermarking runs in your browser, so your PDF is never uploaded — the file stays on your device throughout.
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Frequently Asked Questions
How do I add a watermark to a PDF?
Upload your PDF, type your watermark text, adjust the color, opacity, size and angle, then click Add Watermark and download the result.
Does the watermark go on every page?
Yes. The watermark is applied to all pages — choose a tiled pattern for full coverage or a single centered mark.
Can I make the watermark subtle?
Yes. Lower the opacity (e.g. 10–20%) for a faint background watermark that doesn't obscure the content.
Is the PDF watermark tool free and private?
Completely free, no sign-up, and it runs entirely in your browser — your PDF is never uploaded.