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Batch Process Images with XnView MP: Add Watermarks and Convert to WebP Fast

Need to add your blog URL to photos or convert files to WebP to save space? Doing this one by one can be an endless task. However, with XnView MP’s “Batch Convert” feature, you can process hundreds of images in an instant. The text watermark tool, in particular, offers professional-grade quality with detailed control over fonts, size, and opacity—all for free.  
What you can do with XnView MP:
• Add text watermarks to hundreds of photos simultaneously • Batch convert JPG images to WebP or PNG for web optimization • Resize and rename multiple files at once
Don’t have XnView MP installed yet?
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How to Batch Process Watermarks & Conversions in XnView MP

Step 1: Select Images and Run Batch Convert
In the XnView MP browser, select all the photos you want to process. Then, Right-click -> [Batch convert] or press the shortcut Ctrl + U. Batch conversion setup
 
Step 2: Add Text Watermark (Actions Tab)
Go to the [Actions] tab at the top and select [Add action] -> [Image] -> [Text].
  • Enter your desired text (e.g., Copyright by…).
  • Set the watermark location (e.g., Bottom Right) under Position.
  • Adjust font, color, and opacity. You can see the changes in real-time in the preview pane.
Adding text watermark
 
Step 3: Set WebP / PNG Format (Output Tab)
Now, switch to the [Output] tab.
  • Format: Select WebP or PNG from the dropdown menu.
  • Folder: Choose where to save the files. (We recommend a different folder than the original.)
  • Filename: You can add a suffix like ‘_watermarked’ to distinguish them from the originals.
Output settings
Step 4: Execute Final Conversion
Once everything is set, click the [Convert] button at the bottom right. All images will be watermarked and saved in the new format instantly.
Conversion complete

 

Was this helpful? You can save these settings as a ‘Preset’ in XnView MP to repeat the same watermarking process with just one click next time!

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