Add Watermark to PDF (Free, Private, No Upload)
Watermarking PDFs protects intellectual property, indicates document status, or adds branding to professional materials. Photographers protecting portfolio images, businesses adding company names to proposals, lawyers marking documents as "CONFIDENTIAL" or "DRAFT," and content creators securing digital downloads all need reliable watermarking. This tool adds customizable text watermarks directly in your browser—diagonal text across pages, subtle footer branding, or prominent status indicators—without uploading files to external servers. Unlike stamps which are opaque foreground marks, watermarks are typically semi-transpare not background text that doesn't obscure content but clearly indicates ownership or status. Perfect for protecting creative work before client approval, branding business documents with company names, marking contracts as draft versions pending final review, or adding copyright notices to digital publications. Control every aspect: text content, font size, opacity for subtle or prominent display, rotation angle for diagonal watermarks, color, and precise positioning. Whether you need light gray "CONFIDENTIAL" text diagonally across legal documents, your company name in document footers, or copyright notices protecting digital artwork, the browser-based processing keeps your intellectual property completely private on your device throughout watermarking.
- Click Choose PDF and select your document.
- Enter watermark text and choose style.
- Press Save PDF to download the stamped file.
Related tools: Stamp, Page Numbers, Lock PDF
FAQ
Is my file uploaded?
No, watermarking happens entirely in your browser using JavaScript. Your intellectual property, confidential documents, or creative work never leaves your device, ensuring complete privacy for materials you're protecting with watermarks.
Can I adjust transparency?
Yes, control watermark opacity from fully transpare not (barely visible) to completely opaque (solid text). Light transparency creates subtle branding that doesn't interfere with reading; higher opacity makes watermarks more prominent for security purposes.
Does it support images?
This tool applies text watermarks only. For image-based watermarks (like company logos), you'll need full PDF editing software. Text watermarks are ideal for copyright notices, status indicators, or company names.
Can I watermark specific pages?
Yes, apply watermarks to all pages, specific page ranges, or individual pages. This flexibility lets you watermark only content pages while skipping cover sheets, or mark drafts while leaving final approved sections unmarked.
Is the watermark removable?
Watermarks become embedded in the PDF page content and cannot be easily removed without specialized editing software. This permanence protects your documents—once watermarked, the ownership or status indication remains visible to all viewers.