Watermark

Watermark

What it's for: overlay a text watermark (like "CONFIDENTIAL" or "DRAFT") across every page of a PDF.

How to add a watermark

1. Pick: open a PDF file.
2. Configure: set the watermark text and its appearance.
3. Save: write the watermarked PDF to disk.

How watermark appearance works

• Text: any text you enter; defaults to "CONFIDENTIAL".
• Font size: defaults to 48pt.
• Opacity: 0 (invisible) to 1 (fully solid); defaults to 0.3, a translucent look that doesn't obscure content underneath.
• Rotation: defaults to -45° (the classic diagonal watermark angle), but can be set to any angle.
• Color: gray, red, or blue presets.

The watermark text is centered on the page and applied identically to every page: there's no per-page customization. PaperOtter renders a live single-page preview as you adjust these settings so you can see the effect before committing to all pages.

Why the watermark might look cut off or oddly placed

Very long watermark text at a large font size can extend past the page edges, especially at steep rotation angles: the text is centered based on its rendered width, so extreme combinations of long text + large size + rotation can push parts of it off-page. Shorten the text or reduce the font size if that happens.

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See also: Page Numbers · Sign PDF