Add Watermark to PDF
Add text or image watermarks to your PDF documents - 100% client-side
Add text or image watermarks to PDF pages with full control over position, opacity, rotation, and style. Watermarking runs in your browser — no file uploads to external servers.
Adding Text and Image Watermarks to PDF Documents
A watermark in PDF is a content element overlaid on the page content at a specific z-order — typically drawn with reduced opacity so the underlying content remains readable. Text watermarks are rendered directly as PDF text operators with specified font, size, color, and transparency. Image watermarks embed the graphic as a PDF image XObject positioned at the specified coordinates with an opacity mask applied through an Extended Graphics State (ExtGState) dictionary entry.
Text watermarks are ideal for status labels ('CONFIDENTIAL', 'DRAFT', 'COPY'), copyright notices, and organizational branding. They scale perfectly since they're vector-based, add no significant file size, and remain crisp at any zoom level or print resolution. Image watermarks work well for company logos or stamps that need to match specific brand guidelines exactly, though they add more file size than text watermarks.
Watermarks can be applied as 'stamps' (rendered above content) or 'backgrounds' (rendered behind content). Stamp watermarks appear over text and images; background watermarks appear beneath, visible in page whitespace. Most use cases call for stamp watermarks with 30-50% opacity, which makes the watermark clearly visible without making the underlying content difficult to read.
Mark documents as confidential or draft
Apply status watermarks to internal documents before distributing them to limit risk of accidental misuse.
Add copyright notice to digital publications
Embed copyright text diagonally across pages of ebooks, white papers, or reports shared publicly.
Brand PDFs with company logo
Overlay a low-opacity company logo on every page of outgoing proposals, reports, and client-facing documents.
Mark review copies for specific recipients
Add recipient-specific text watermarks to review copies to trace document leaks back to the source.
- 1
Upload the PDF to watermark
Select your PDF. The tool will show a preview of the first page so you can visualize watermark placement before committing.
- 2
Configure watermark content and style
Choose text or image watermark. For text: enter content, select font, size, color, and rotation angle. For image: upload a PNG/JPEG and set scale. Both types support opacity control from 10-100%.
- 3
Set position and page scope
Choose watermark position (center, corner, diagonal) and whether to apply it to all pages or only specific page ranges.
- 4
Apply and download
Click Add Watermark to process all pages in your browser and download the watermarked PDF.
Text and image watermarks
Supports both scalable vector text watermarks and image-based watermarks from PNG or JPEG files.
Full opacity and rotation control
Adjust transparency from barely visible to fully opaque, and rotate text or image watermarks to any angle including the classic diagonal.
Page-range targeting
Apply watermarks to all pages, the first page only, specific page numbers, or custom ranges.
Stamp and background modes
Render watermarks above content (stamp) or behind content (background/underlay) depending on your visibility requirement.
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