Boxoft Batch Photo Processor can dim pictures depand on requirement. in addition to this, it doesn't only provide image watermark but also date and text watermark. you can also look at other dozens of special effects provided. no matter you want to touch photo up, resize picture, flip photo and so on, you always can use it.
More details follow steps below:
Launch it by double clicking its desktop icon, add some aim pictures;
On the left-right box, click "Effect", choose "Blur";
Click green arrows towards the right to start editing picture;
On pop-up box, drag "Blur" bar to make a blurry picture;