Watermark Tool — PDFMster

Watermark Tool — PDF & JPG

Add text or image watermark to PDF pages or JPG images. Optional OCR for locating keywords and saving editable text.

Select PDF or JPG files (you can select multiple images or one PDF)

Drag & drop supported. Files are processed locally in your browser.









If OCR enabled and keyword found, watermark will be placed nearby (per-page).

Watermarked PDF (if input PDF or multiple images will be combined into PDF)
Watermarked JPG(s) (one per page / image)
Bundle outputs in ZIP (if multiple files)
Note: JPG is raster — watermark drawn into image. PDF watermark uses PDF drawing so watermark text is selectable in many PDF editors.