Processed locally — no upload
Add Watermark
Protect your documents or mark drafts with custom diagonal or centered text watermarks. Configure opacity, font size, angle, and color.
Drop your PDF here
or browse from your computer
Supports: .PDF
Key Features of Add Watermark
Diagonal 45° or horizontal layout
Adjustable transparency (opacity)
Custom text (e.g. DRAFT, CONFIDENTIAL)
Applies across all pages
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No registration or download queues
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Got Questions?
Frequently Asked Questions
Everything you need to know about our browser-side PDF architecture.
Yes, you can choose between a classic diagonal 45° banner or a centered stamp.