Change similar pixels with the Magic Eraser tool

When you click in a layer with the Magic Eraser tool, the tool changes all similar pixels to transparent. If you’re working in a layer with locked transparency, the pixels change to the background color. If you click in the background, it is converted to a layer and all similar pixels change to transparent.

You can choose to erase contiguous pixels only or all similar pixels on the current layer.

Example of erasing similar pixels

1. Select the Magic Eraser tool .
2. Do the following in the options bar:

   • Enter a tolerance value to define the range of colors that can be erased. A low tolerance erases pixels within a range of color values very similar to the pixel you click. A high tolerance extends the range of colors that will be erased.

   • Select Anti-aliased to smooth the edges of the area you erase.

   • Select Contiguous to erase only pixels contiguous to the one you click, or deselect to erase all similar pixels in the image.

   • Select Sample All Layers to sample the erased color using combined data from all visible layers.

   • Specify an opacity to define the strength of the erasure. An opacity of 100% erases pixels completely. A lower opacity erases pixels partially.

3. Click in the part of the layer you want to erase.

 community help (adobe.com)