GizmoAlpha for Mac

From Jean-Max Buzzi:

This program is a utility to create an alpha (ie to define transparent areas) of an image and create a mask as an image format. JPG and an image taking into account the transparency in PNG format.�? 

To do the job you have two kinds of tool:

• Various shapes of pen (square, circle or line) of arbitrary size to erase the image or the mask.
• An eraser selecting a color range.
• It also allows you to change the width to height ratio of your images without deforming and save them with an arbitrary size.

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