# Watermark PDF - Add Text Watermarks to PDF Online

> Free online PDF watermark tool: add text watermarks to every page, tiled or centred, with opacity and angle controls. Any language, processed locally.

- URL: https://qilingtools.com/en/pdf/watermark
- Category: PDF Tools (https://qilingtools.com/en/pdf)
- Tags: [PDF](https://qilingtools.com/en/tags/pdf), [Watermark](https://qilingtools.com/en/tags/watermark)
- Last updated: 2026-10-29
- Price: Free, no sign-up
- Privacy: Runs locally in the browser; files are never uploaded

Add a text watermark such as "CONFIDENTIAL" or "For ACME use only" to every page. Set font size, color, opacity, rotation and choose a centered or tiled layout to mark ownership and discourage sharing.

## How to use

1. Upload a PDF file
2. Type the watermark text and set size, color, opacity, angle and layout
3. Click start and download the watermarked PDF

## Features

- Any language, including CJK text
- Centered or tiled layout
- Adjustable opacity, angle and color
- Applied to every page

## FAQ

### Can the watermark be removed?

The watermark is stacked on the page as an image. Ordinary readers cannot remove it, but professional editors might, so do not rely on it as your only protection.

### Are my files uploaded to a server?

No. Everything runs locally in your browser via WebAssembly. Files never leave your computer and are discarded when you close the page.

### Do I need to sign up or pay?

No. The site is completely free, requires no account, has no usage limits and adds no watermarks.

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