Add logos or image watermarks to photos with Star Watermark for Mac. This free, offline tool supports batch processing, making it faster than Photoshop.

1. Create Your Watermark Template

   Download Star Watermark, launch it, and create a new template. Double-click to edit.

   

2. Edit Your Watermark Template

   Switch to the "Image" tab and set watermark style: image path, angle, transparency, width, height, and auto scale.

   

   Auto Scale: Enable "Auto Scale" to adjust watermark size for different image dimensions.

   Rotation: Adjust the angle of the image watermark.

   Transparency: Set the image transparency level.

   Location: Position the watermark (e.g., Center, Top Left) or rotate it.

   Offset: Fine-tune the watermark’s position with offset values.

3. Select Your Template

   After editing, close the "Edit Watermark Template" dialog. Select your template from the left panel.

   

4. Preview or Process

   Click "Add Files" or drag images to the main dialog. Click "Output Preview" to check, then "Process" to apply watermarks.

   

5. View Watermarked Images

   Output files are saved in the original directory with a "_new" suffix (e.g., "a.jpg" becomes "a_new.jpg").

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