# Watermark PDF

> Add a text watermark to every page.

[Open tool](https://www.toolcabana.com/cu/watermark-pdf) · [PDF and documents](https://www.toolcabana.com/cu/category/pdf-and-documents)

Tool ID: watermark-pdf. Requested language: cu. Description language: en. Complete guide translation: no; untranslated sections use English.

## Overview (en)

Watermark PDF draws a text watermark across the center of every page of a PDF. The default text is DRAFT, and you can change it along with the font size from 8 to 150, the opacity from 0.05 to 1 and the angle from -180 to 180 degrees. The watermark is gray and the default tilt is -35 degrees.

## Supported tasks (en)

Add a text watermark to every page.

## Steps (en)

1. Choose a source file. If the tool accepts multiple files, arrange them in the order you want.
2. Adjust the basic settings, then open Advanced mode for export and fine-tuning options. Custom settings stay active when the panel is closed.
3. Run watermark pdf, review the output, then use the available copy or download controls.

## Settings

- Watermark (en; key: text; type: text)
- Font size (en; key: size; type: number); minimum: 8; maximum: 150
- Opacity (en; key: opacity; type: range); minimum: 0.05; maximum: 1
- Angle (degrees) (en; key: angle; type: number); minimum: -180; maximum: 180

## Limitations (en)

PDF input is bounded to 20 MB per file. Page rendering is capped at 200 selected pages; page-edit output is bounded to 500 pages.

## Privacy and connections (en)

This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.

## Questions (en)

### How do I add a CONFIDENTIAL watermark to a PDF?

Replace the default DRAFT text with CONFIDENTIAL and run the tool. The text is centered on every page; adjust the font size if a longer word runs past the page edges.

### How do I make a PDF watermark lighter or more visible?

Use the opacity slider, which ranges from 0.05 to 1 and starts at 0.2. Lower values make the watermark fainter so the content stays readable, and 1 makes it fully solid gray.

### Can I add a horizontal watermark instead of a diagonal one?

Yes. Set the angle to 0 for horizontal text. The default -35 degrees produces a diagonal watermark, and any value from -180 to 180 degrees is accepted.

### Where is my input processed?

This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.

### What are the input limits?

PDF input is bounded to 20 MB per file. Page rendering is capped at 200 selected pages; page-edit output is bounded to 500 pages.

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