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Add Watermark to PDF
Protect confidential agreements, manuscripts, and contracts with custom diagonal or horizontal watermarks.
Click to upload or drag & drop PDF to watermark
Stamp custom text, confidentiality marks, and draft labels across all pages.
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PDF Watermark Frequently Asked Questions
Learn how to stamp and protect your documents with client-side watermarks.
How do I add a watermark text across all pages of a PDF?
Upload your PDF document, type your desired watermark text (such as "CONFIDENTIAL", "DRAFT", or your company name), adjust the opacity, font size, and rotation angle (-45° diagonal is standard), and click "Apply Watermark & Download".
Can I customize the color and transparency of the watermark?
Yes. You can select between red, black, blue, or gray text colors, and tune transparency from subtle 10% ghost watermark up to 60% high-contrast stamp.
Does applying a watermark alter the original document layout?
No. The watermark is rendered as an overlay layer on top of each page. The original text, tables, fonts, and hyperlinks in your PDF remain fully intact.