PDF Watermark & Page Numbering
Stamp vector text or image watermarks with custom opacity, rotation, and placement, and add headers, footers, and formatted page numbers across selected page ranges.
Method and assumptions
Existing PDF pages are modified directly in vector space using pdf-lib without rasterizing page content. Text watermarks and header/footer/page-number strings are drawn using embedded standard Helvetica fonts with configurable opacity, rotation angle, and RGB color. Image watermarks embed PNG or JPEG assets directly into the target page dictionaries.
Common mistakes and edge cases
Watermarks and page numbers are added as vector drawing operations in the page content stream; they remain selectable text/vector objects rather than destructive pixel burns.
How to use
- Drop a PDF file into the workspace (or load the 3-page sample PDF).
- Configure a vector Text watermark, upload a PNG/JPG logo watermark, or select No watermark.
- Toggle Add page numbers, choose a numbering format and position, and optionally enter header/footer text or a page range.
- Click Apply watermark & numbering and download the stamped PDF.
Example
Load a 3-page specification PDF, set Watermark text to CONFIDENTIAL at 25% opacity and 45° rotation, enable 'Page 1 of N' bottom-right numbering, and download the stamped vector PDF.
Frequently asked questions
- Does watermarking rasterize my PDF pages?
- No. Watermarks, headers, footers, and page numbers are drawn directly onto the existing vector PDF pages, preserving all original selectable text and sharp vector graphics.
- Can I watermark only specific pages?
- Yes. Enter a page range such as 1-2, 4 in the Page range field instead of 'all'.
RELATED TOOLS
- PDF Merge, Split & Visual Organizer
Merge multiple PDFs, reorder or rotate pages visually, and split by page ranges.
- Images to PDF & PDF to Images Converter
Convert JPG/PNG/WebP images into a PDF or render PDF pages to high-res images.
- PDF Signer, Form Filler & Flattener
Draw, type, or upload a signature, fill interactive PDF forms, and flatten.
FROM THE PORTFOLIO
Explore the RoninDesk portfolio.
This tool is provided for general informational and workflow purposes only. It does not constitute financial, investment, tax, or professional advice. All calculations run in your browser; no input data is transmitted or stored.