Image Watermark
Stamp a logo or other image as a watermark on every page of a PDF — opacity-controlled, position-tunable.
1. Upload your files (min 2)
How does the Image Watermark work?
Stamp a logo or any image as a watermark on every page of a PDF — useful for branding draft documents, deterring unauthorised redistribution, or marking confidential exports. Opacity-controlled (15-30% is the standard "background watermark" look) and position-tunable (center for the classic full-page watermark; corners for subtle branding). For text watermarks like "DRAFT" or "CONFIDENTIAL", use Add Watermark instead.
🔒 Security & Privacy
All processing happens on your device. Your files never leave your browser, never touch our servers, and are not stored anywhere. Close the tab and the file is gone.
📱 Use it on any device
Works in any modern browser — Mac, Windows, Linux, iPhone, Android, and tablets. No installation, no app to download. Just open the page and start.
⚡ Quick & easy
Drag, drop, click. Most files process in seconds, not minutes. No watermarks added to your output, no per-day limits, and the tool always shows the result before asking you to download.
🎁 Always free, no signup
Free to use, every time. No account creation, no email required, no “trial” that converts to a paid plan. We make money from ads so you don’t have to pay.
Frequently asked
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Resize an image to a target dimension while preserving aspect ratio. Reports the GCD-simplified ratio (16:9, 4:3 …) and total megapixels.