Documents that need watermarks — "CONFIDENTIAL," "DRAFT," proprietary materials — are exactly the documents that shouldn't be uploaded to a watermarking service. ModernPDF...
Open Watermark PDFProtect your documents without exposing them to third-party servers.
The document you're marking as sensitive never leaves your device during the watermarking process.
Text, size, color, opacity, angle, position — configure the watermark to match your organization's standards.
Watermarks are composited into the PDF pages. They can't be easily stripped by recipients.
Your PDF loads into browser memory. Preview pages that will receive the watermark.
Set text, appearance, and placement. Preview the watermark overlaid on your actual pages.
Watermark is stamped onto selected pages locally. Download the protected document.
Set your watermark text, adjust appearance, and stamp it across every page without the document ever leaving your device. The irony of uploading confidential files to add a "CONFIDENTIAL" stamp is lost on most tools. Not this one.
Free users get 3 watermarking tasks per day. Each task covers the full document regardless of page count. For pre-release materials, internal strategy documents, legal drafts, and any file where distribution control matters, the watermark communicates "handle with care" to every recipient.
The purpose of watermarking is protection — marking a document as confidential, draft, or proprietary. The intent is to control distribution and signal sensitivity.
Uploading that document to a server-based watermark tool is a contradiction. You're sending the content you want to protect to a third party so they can stamp a protection label on it.
ModernPDF resolves this contradiction. The watermark is composited onto PDF pages in your browser. The document you're protecting never leaves the device you're protecting it from leaving.
Yes — that's the specific use case. The document never leaves your device during watermarking. The sensitive content stays local while the watermark is applied.
Watermarks are embedded into the PDF page content. They can't be easily removed by recipients, which is the point for protecting drafts and proprietary materials.
Yes. You can apply the watermark to all pages at once, to a specific page range such as pages 2 through 10, or to individually selected pages. This flexibility is particularly useful when cover pages, tables of contents, or appendices should remain clean while the main document body carries the protective watermark.
Text content, font size, color, opacity (transparency), rotation angle, and position on the page. Preview the result on your actual document before applying.
No. The watermark is a standard PDF text overlay with no identifying metadata. It looks the same as a watermark applied by any tool.
Free to start. Files stay on your device. Upgrade to Pro for unlimited use.
Open Watermark PDF