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Stamp text watermarks with color, opacity, placement, angle, and page selection.
Workspace
Private · Browser-based · No account · No upload
Add Watermark is a free online PDF Tools tool on AllToolHub. Stamp text watermarks with color, opacity, placement, angle, and page selection.
It is designed for students, office workers, freelancers, and anyone sharing documents. PDF bytes are processed in the browser whenever possible so drafts and contracts stay on your device.
When you finish, download or copy the result and close the tab on shared computers. Keep an original backup before irreversible edits like compression or permanent page deletes.
Upload a PDF and enter watermark text (for example CONFIDENTIAL).
Set placement, color, opacity, angle, and font size.
Select which pages to stamp (or keep all selected).
Run Add watermark and download watermarked.pdf.
Yes. Add Watermark on AllToolHub is free, requires no account, and is built to run in your browser without a paid plan or watermarks from us.
Processing is designed to happen locally in your browser whenever possible. PDF bytes are processed in the browser whenever possible so drafts and contracts stay on your device. Standard web hosting may still log technical page requests, not your file contents.
After the first visit, the Progressive Web App cache can keep many pages available offline. Tool scripts must be cached first; heavy libraries load when you open the tool.
Add Watermark is built for students, office workers, freelancers, and anyone sharing documents. Stamp text watermarks with color, opacity, placement, angle, and page selection.
You get a consistent, fast UI, private local processing when possible, light/dark mode, and no mandatory sign-up - plus related PDF Tools in one place.
Yes. Select page thumbnails before running Add watermark. Placement options include diagonal, center, tile, top, and bottom.
Stamp text watermarks with color, opacity, placement, angle, and page selection. It runs in your browser on AllToolHub with no account required.
Very large inputs may be limited by your device memory and browser. For huge files, try a desktop machine or split the work into smaller batches.