# Watermark PDF

> Stamp "Confidential", "Draft", or any custom text with full control over size, opacity, and layout.

Add text watermarks like Confidential or Draft to every PDF page - diagonal, tiled, custom opacity. Free, private, processed 100% in your browser.

- **Canonical:** https://www.ailovekit.com/pdf/watermark-pdf/
- **Category:** PDF Tools
- **Processing:** Runs entirely in your browser. Files are never uploaded to AiLoveKit servers.

## Protect Documents with a Watermark

A visible watermark is the simplest way to mark a document as **Confidential**, **Draft**, or **Do Not Distribute**. AiLoveKit stamps your chosen text onto every page of the PDF with adjustable font size, opacity, and rotation - and it all happens locally in your browser, so the document being protected never gets exposed to a third-party server.

## Watermark Options

- **Diagonal or straight** - classic 45° stamps or horizontal labels.

- **Tiled layout** - repeat the watermark across the page for stronger protection.

- **Opacity control** - subtle enough to read through, visible enough to deter misuse.

For stronger protection, combine watermarking with [Protect PDF](https://www.ailovekit.com/pdf/protect-pdf/) encryption.

## Frequently Asked Questions

**Can I watermark every page at once?**

Yes. Your text stamp is applied to all pages in one pass, as a centered stamp or a tiled grid.

**Can the watermark be removed later?**

The watermark is written into the PDF content, so it cannot be toggled off - which is exactly what you want for document protection.

**Does it work on scanned PDFs?**

Yes. The stamp is drawn on top of any page content, scanned or digital.

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Source: https://www.ailovekit.com/pdf/watermark-pdf/
Part of AiLoveKit: https://www.ailovekit.com/
Machine-readable index: https://www.ailovekit.com/llms.txt