Stamp custom diagonal text or labels like CONFIDENTIAL, DRAFT, and SAMPLE across all pages with customizable font size, opacity, and rotation angles.
Drag & drop your file here, or click to browse. Stamp confidential stamps, draft labels, or custom text.
Stamp custom diagonal text or labels like CONFIDENTIAL, DRAFT, and SAMPLE across all pages with customizable font size, opacity, and rotation angles.
Fast and easy from start to finish
Upload PDF: Select your PDF document.
Customize Watermark: Choose a preset label or type custom text, then adjust angle, color, and opacity.
Stamp & Download: Click Stamp Watermark to download your protected document.
What you can do with this tool
Standard watermark presets including CONFIDENTIAL, DRAFT, DO NOT COPY, and SAMPLE
Custom text input for company names, review notices, and author credits
Customizable rotation angles (45°, 0°, -45°) and color options
Opacity slider to ensure underlying text remains readable
Unlock batch scale, higher resolution, and expanded limits
Stamp official corporate logos with adjustable transparency and scale.
Cover the entire page in a repeating security grid to prevent theft.
Automatically include client name and timestamp on every sheet.
Answers to common questions about PDF Watermark Stamper
You can adjust the opacity slider between 10% and 70% so the watermark is clearly visible without blocking reading.
Yes, the watermark is stamped across every page in your document consistently.
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