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Stamp every page of your PDF with CONFIDENTIAL, DRAFT, APPROVED, or custom text. Choose color, size, angle, and opacity. Stamps are permanent — embedded directly into the PDF.
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Free online legal document stamper. Add CONFIDENTIAL, DRAFT, APPROVED, or custom stamps to every page of your PDF. Stamps are drawn directly into the PDF content stream — they cannot be removed or hidden by the recipient. Customize color, opacity, angle, and font size. Your documents never leave your device. A free alternative to Adobe Acrobat's stamp feature.
Yes. Unlike some tools that add stamps as removable PDF annotations, this tool draws the text directly into the page content stream using pdf-lib. The stamp becomes part of the page — just like printed text. It cannot be deleted, hidden, or stripped by the recipient without visibly damaging the document.
Legal stamps (CONFIDENTIAL, DRAFT) are typically more prominent — larger text, higher opacity, centered on the page. Watermarks are usually subtle background text. Use a stamp when you need the classification to be immediately obvious to anyone who opens the document. Use a watermark when you want the text present but unobtrusive.