Add custom text watermarks to protect your PDFs. Adjust opacity, size, rotation, color, and position.
or drag and drop PDF files here
Adding watermark to all pages. Please wait.
Add text watermarks to your PDF files to protect intellectual property, brand your documents, or mark them as confidential. Our tool runs entirely in your browser – no files are uploaded to any server. Adjust opacity, font size, rotation, and color. Place the watermark anywhere using the 3x3 grid.
Select your PDF, customize the text and appearance, then click "Stamp PDF Document". The watermark is added to every page of the PDF.
No. All processing happens in your browser using the pdf-lib library. Your file never leaves your device.
Currently this tool supports text watermarks. Image watermarking may be added in the future.
Only PDF files are supported.
Since processing is client‑side, large files may take longer but there is no hard limit.