Add Watermark to PDF Online – Free Text & Logo Watermark Tool
Add watermark to PDF online instantly using text or image logos. Protect your documents by inserting copyright watermarks, confidential labels, or company brandingacross one or multiple pages. This powerful PDF watermark toollets you control watermark size, opacity, rotation, position, and transparency with precision.
Perfect for contracts, invoices, reports, ebooks, legal documents, business PDFs, academic papers, and internal files. Add text watermark or upload a logo watermarkto secure your documents and prevent unauthorized distribution.
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PDF Watermark — Stamp Draft, Confidential, or Custom Marks on Every Page
Watermarks communicate document status and distribution intent without modifying the document's content. A "DRAFT" watermark on a working document tells every recipient its status before they read a word. "CONFIDENTIAL" across a sensitive report establishes the handling expectation for everyone who opens it. "SAMPLE" across a portfolio piece makes the terms of distribution unambiguous. These marks serve both a communication purpose and a deterrence purpose — recipients who might casually forward or copy confidential content are reminded on every page that the document carries restrictions.
Watermark appearance determines whether it communicates clearly without interfering with readability. A diagonal text watermark at 45° placed at 30–40% opacity across the center of each page is visible enough to be noticed but transparent enough that the underlying document content remains fully readable. A watermark that is too opaque obscures text and makes the document harder to use. A watermark that is too faint disappears on printed copies. The watermark tool provides opacity, size, position, rotation, and color controls so the mark achieves its communicative purpose without degrading the document's usability.
Image watermarks — logos, seals, and custom graphics — serve authentication and branding purposes alongside the textual status marks. Official government documents, certificates, diplomas, and licensed reports commonly carry institutional seal watermarks that establish provenance. A consulting firm's logo watermarked across deliverable PDFs reinforces the attribution of proprietary analysis. Watermarks applied to scanned archival documents help identify the scanning institution and date in digital archives where documents from multiple sources are intermixed. The PDF watermark tool applies both text and image watermarks with consistent placement across all pages.