---
title: "Add a watermark to PDF | Docs Bunny"
description: "Apply custom diagonal watermark text to every page with adjustable opacity."
canonical: https://docsbunny.com/watermark-pdf
---

# Add a watermark to PDF

Apply custom diagonal watermark text to every page with adjustable opacity.

- Input: PDF
- Output: watermarked PDF
- Browser tool: [Open Add a watermark to PDF](https://docsbunny.com/watermark-pdf)
- Privacy: Supported processing runs locally after the person selects a file.

## PDF to watermarked PDF

Use the focused local workflow to prepare a downloadable result without sending the source file to an application server.

## Steps

1. **Choose your PDF file** — Drop it into the tool or browse from your device.
2. **Review your settings** — Choose the options available for this conversion.
3. **Download the watermarked PDF** — Keep the result in your workspace or download it immediately.

## Common questions

### Is this PDF to watermarked PDF converter free?

Yes. The local converter is available without an account or per-file charge.

### Are my files uploaded?

No. Supported conversions run locally on your device using browser APIs and WebAssembly.

### Will complex formatting look identical?

Text and document structure are preserved where possible. PDFs use layout-aware reconstruction and automatic local OCR for scanned pages, though very unusual fonts or visual layouts can still differ.