ImgZero LogoImgZero
100% Private In-Browser Tool • Zero Uploads

Add Watermark to PDF

Protect your PDF documents with custom text or image watermarks, tiled patterns, and opacity control.

Add Watermark to PDF

Protect documents with custom text or image watermarks, diagonal repeating patterns, and precise opacity control.

Drag & drop image files here, or browse

Select or drop a PDF to add a text or image watermark.

Step-by-Step Guide

How to use Add Watermark to PDF

1

Upload PDF

Select the PDF document you want to protect with a watermark.

2

Configure Watermark

Enter your watermark text or upload a logo, adjusting opacity, angle, and layout.

3

Apply & Download

Preview the result in real time and download the watermarked PDF file.

Features & Benefits

Why use ImgZero for Add Watermark to PDF?

Text watermark mode: custom string, font choice, font size, ink color, and angle sliders
Image watermark mode: upload company logo or seal with scaling and opacity controls
Layout options: Center stamp, Tiled repeating grid, or 6 anchor positions
Selective page ranges: All pages, Odd pages only, Even pages only, or custom ranges
Real-time live canvas preview of the watermark overlaid on your actual document

Frequently Asked Questions

Can I apply a diagonal repeating watermark across the whole page?

Yes. Select the 'Tiled Repeating Grid' layout option to automatically repeat your watermark diagonally across every page.

Can I watermark only specific pages?

Yes. You can apply the watermark to All pages, Odd pages only, Even pages only, or enter a custom page range (e.g. 1, 3-5).

100% Client-Side Privacy Guarantee

Your files stay on your machine. No server uploads and no file-content tracking.

Zero Server Bandwidth Delay
Instant Web Worker Speed
Works Fully Offline