The Magic Wand tool selects colors in an image, tolerance zero selects exact color match, save images with layers in Photoshop format.
Magic Wand tool allows you to select a portion of a picture based on its color by clicking on a specific color within the image.
The tolerance levels given to the Magic Wand tool determine how closely the selected colors match the clicked pixel. A tolerance level of 0 will select only the exact matching color.
When you want to save a picture to preserve layers for future editing, you should save it as a Photoshop file which retains all the layer information.
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