PDF Watermark Adder
Stamp diagonal text watermarks like DRAFT or CONFIDENTIAL on every PDF page.
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How to use
Upload a PDF, type the watermark text, adjust the look, then download. Everything runs in your browser. Everything runs in your browser — no uploads, your files never leave your device.
Frequently asked questions
Can I change the watermark text?
Yes — any text, plus size, color and transparency controls.
Will it cover my content?
It sits semi-transparent behind your reading flow; lower opacity keeps text readable.
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