Watermark PDF
Add a Unicode text watermark to every page or a selected range. Choose centered, diagonal, header, footer, or tiled placement, then control font size, color, and transparency.
Workspace
Drop a file here
or drop one or paste here · pdf · up to 200 MB each
Specification
- Accepts
- Returns
- Runs on
- pdf-libfontkit
Purpose-built PDF workflow
Use Watermark PDF online
Place a readable text mark in one location or tile it across selected pages, with explicit color, opacity, and size controls.
Precise controls without hidden quality loss
Included
Bengali, Hindi, and broad Unicode text
Included
Selected-page and open-ended range support
Included
Centered, diagonal, header, footer, and tiled layouts
The existing page remains vector content. The watermark is added as a separate content layer with embedded Unicode font data.
A watermark discourages casual reuse but is not digital-rights management or cryptographic protection.
How to use Watermark PDF
- Choose the PDF and enter watermark text.
- Set placement, size, opacity, color, and optional pages.
- Add the watermark and download the marked PDF.
Watermark PDF questions
What does the Watermark PDF do?
Place a readable text mark in one location or tile it across selected pages, with explicit color, opacity, and size controls.
Does the Watermark PDF preserve PDF quality?
The existing page remains vector content. The watermark is added as a separate content layer with embedded Unicode font data.
What should I know before using the Watermark PDF?
A watermark discourages casual reuse but is not digital-rights management or cryptographic protection.
Are files kept after using the Watermark PDF?
No. The upload is processed in a temporary job directory and removed when the result is returned, with the crash cleanup as a final safeguard.