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Add Watermark to PDF adds a customizable text watermark to every PDF page via pdf-lib's page.drawText() — controls font size, color (hex → rgb), opacity (0.1–1.0), rotation (−90° to 90°), and position (center/diagonal/corners).
Add Watermark to PDF is a high-performance utility designed to help users streamline their workflow. Built with modern web technologies, it ensures fast processing times and high-quality outputs directly in your browser.
Watermark applied via pdf-lib's page.drawText() with embedded StandardFonts.HelveticaBold. Color hex parsed to rgb(r/255, g/255, b/255). Position presets compute x/y from (page.width, page.height) per page so margins stay consistent across mixed page sizes.
This tool adds text watermarks. For image/logo watermarks, you can convert your image to text first or use a PDF editing application.
Yes — the watermark is added to every page of the PDF in one operation.