You can eliminate excess pixels along the edges of a pixel selection. This is useful if excess pixels appear along the border of a pixel selection or marquee after you use the Magic Wand tool.

This is a picture of the feature being described.

A pixel selection before and after smoothing

To smooth the border of a marquee:

  1. Select Select > Smooth Marquee.
  2. Enter a sample radius to specify the desired degree of smoothing, and click OK.