Add CONFIDENTIAL, DRAFT, or your own logo to every page of any PDF. Diagonal or centred, any opacity. Your file never leaves your device.
The PDF watermarker adds a text or image watermark to every page of a PDF — CONFIDENTIAL, DRAFT, your name, or a logo. Set the opacity, position, size, and rotation. The watermark is baked into the page content (flat watermark), not added as a removable layer. Processing runs entirely in your browser via WebAssembly — your file is never uploaded to any server. No account required.
☯ Drop your PDF here
or click to browse your computerℹ️ Work from a copy of your file and keep the original safe. Check the result before you use it.
📷 Click to upload your logo or image
PNG (with transparency), JPG, or WebP
Watermarks are embedded directly into the PDF content layer using pdf-lib — the same library used by your existing tools. Nothing is uploaded. No server processes your file.
NDAs, legal filings, internal reports, board documents. Red diagonal is the standard appearance.
Documents shared for review that should not be treated as final. Prevents misuse of preliminary versions.
Proposals, templates, or portfolios shared with prospects. Shows the content without giving away a clean copy.
Brand documents, client deliverables, invoices. A semi-transparent logo on every page reinforces ownership.
High-security documents where a single stamp could be cropped out. A repeating pattern covers every area of the page.
Cleaner appearance for client-facing documents where a diagonal stamp would feel too aggressive.
Rapid