Add Watermark to PDF Free
Protect documents with custom text or image watermarks. Control opacity, position, and rotation.
Drop a PDF file here
Adding watermark...
Frequently asked questions
Everything runs entirely in your browser using WebAssembly. Your files never leave your device — no upload, no server, no cloud.
No artificial limit. Processing capacity depends only on your device's available memory. Desktop browsers typically handle files up to 500 MB.
Never. ILikePdf does not add watermarks to any output file, free or otherwise.
Yes. The tool works in any modern mobile browser (Chrome, Safari, Firefox) on Android and iPhone with no app installation.
Yes. You can overlay text watermarks with custom font, size, and opacity, or upload an image stamp across all pages.