Add Text Watermark to PDF

Apply a text watermark to selected PDF pages with adjustable position, font size, margin, and opacity.

One PDF, up to 50 MB and 1,000 pages. Password-protected or damaged PDFs are not supported.

Use physical page numbers, starting at 1. Ranges are inclusive. No repeated pages.

72 points = 1 inch.

Your file is processed in your browser and is not uploaded to ToolPixels. Files are not saved by this tool. Reset clears the current files and results.

Details and limits

Enter one line of text and select its position and opacity. The watermark is drawn over existing content, aligned to the displayed page even if it is rotated. Western European text is supported; use an image for other scripts.

Keep your original file and review the export. Signed or certified documents are not supported. Restructuring pages does not support interactive forms and may lose bookmarks, document attachments, or cross-page links. Watermarks and numbers cover content; they do not redact or secure it.