Online PDF tool

Watermark PDF Online Free

Add a diagonal text watermark to every PDF page and download the watermarked PDF.

Choose File

Select from your device or drag & drop here.

Your browser handles the file for this workflow unless stated otherwise.

Ready

Watermark text

Font size

Opacity

Preparing…

📱 Mobile friendly⚡ Browser-first🔒 Privacy focused⬇ Direct download

Choose your file

Select the PDF, Office document or image required by this tool.

Process

Configure the available options and run the task.

Download

Download your generated document to your device.

Add a diagonal text watermark to every PDF page and download the watermarked PDF.

This page uses a dedicated, crawlable URL with mobile-friendly controls and clear search intent.