What does this tool do?
PDF Watermark: pdf file, watermark type, watermark text, font size, opacity (%), rotation angle, position → watermarked pdf file, live preview, download pdf. Process locally in your browser. Inputs: PDF file, Watermark type, Watermark text, Font size, Opacity (%), Rotation angle, Position. Outputs: Watermarked PDF file, Live Preview, Download PDF.
How to use it?
Provide the listed input and choose Process. Review the result, then copy or download where available. Clear removes inputs and results.
Browser-local processing. No uploads, content logging, persistence or remote resource loading. Generated markup is inert text; files are treated as untrusted data.
100% in-browser PDF processing. Files are read in memory via client WebAssembly/JavaScript; no documents, content, or telemetry are uploaded to any server.
Add custom text or image watermarks across PDF documents with full control over opacity, rotation, scale, and placement.
Supports center placement, repeating grid tiles, and corner positioning. Previews directly in-browser with zero uploads.