The PDF Watermark tool adds text or image watermarks to PDF files locally in your browser. It is useful for contracts, invoices, scans, reports, and shared documents that need ownership, status, or archive marks.
Key Features
- Upload one PDF file and process it locally.
- Add text watermarks with text, color, opacity, font size, rotation, and tiling options.
- Add image watermarks from PNG or JPG files with opacity, rotation, page ratio, position, and tiling options.
- View progress, processed pages, output size, and output file name.
- Download the generated watermarked PDF directly.
How to Use
- Upload the PDF file that needs a watermark.
- Choose text watermark or image watermark and adjust opacity, rotation, tiling, and other options.
- Generate the watermarked PDF and wait for local browser processing.
- Review the result and download the output file.
Font Notes
- English, numbers, and common symbols use built-in PDF fonts.
- Chinese and other non-ASCII text loads the local Noto CJK font on demand and embeds it into the PDF.
- For company marks, seals, or complex logos, create a transparent PNG and use it as an image watermark.
Common Uses
- Mark contracts, quotes, and reports as internal, draft, confidential, or reviewed.
- Add company names or usage notes to invoices, receipts, and scanned documents.
- Add ownership or copyright marks before sharing files externally.
- Add project, batch, or review status marks to archived documents.
Privacy
This tool reads the PDF, draws the watermark, and generates the result in your browser. It does not actively upload PDF files or watermark images to the server.