Forum Discussion

Boboin's avatar
Boboin
Iron Contributor
Mar 07, 2025
Solved

How can I add logo watermark in pdf file on Windows 11?

Hi everyone, I'm indie author who is just getting started. I recently finished an ebook and would like to add my personal logo as a watermark or cover element in my own PDF version. However, I'm not ...
device management
Features
Yarisyoyo's avatar
Yarisyoyo
Bronze Contributor
Mar 07, 2025

pdfjam is an open source command-line PDF tool , designed to quickly merge , rotate , crop PDF pages designed to support the embedded image watermark . You can use the free pdfjam tool for adding logo watermark in pdf. It does not require the installation of complex dependencies , only through a simple configuration file or command-line parameters to complete the operation , especially for the command-line tool has a certain basis for users . Its core advantage lies in the lightweight (single file executable), cross-platform compatibility (Windows/macOS/Linux are applicable), and completely free and open source.

Create a new text file in the directory where the PDF file is located and enter the following:

<<EOF
LogFile logo.log        
PageSize A4             
PageSetup 0 0 595 842  
ImageList logo.png   
EOF

Open CMD/PowerShell and execute the command to add logo watermarks to PDF file:

pdfjam --nup 1 input.pdf logo.conf output.pdf

Key Tips

  • Transparent background support: Logo needs to be in PNG format and retain the transparent channel.
  • Multi-page PDF processing: If the original PDF contains multiple pages, repeat the path of the logo in ImageList to automatically cover all pages.
  • Anti-Occlusion Optimization: It is recommended to place the logo at the edge of the page (e.g. bottom right corner) to avoid covering the body content.

 

Resources