tool.420300.xyz

Add watermarks to PDF while files stay in your browser

Choose a PDF, set text, color, opacity, density, and rotation, preview the result, then export a new watermarked file

Does it support Chinese watermarks?

Yes. Text is rendered by browser fonts into a transparent image before being embedded into the PDF

This version focuses on text watermarks and does not support image watermarks, removing existing watermarks, or decrypting password PDFs