When preparing an image for printing, as the final step add a 3-pixel black hairline around the perimeter to define the edge. Here are a couple of easy ways to do this:
– Select the entire image (Command-A [PC: Ctrl-A]). Then, go to Edit>Stroke and set the Width to 3 px, the color to black, and the Location to Inside.
– With the image layer unlocked (if it’s the Background layer, double-click it), add a Layer>Layer Style>Stroke. Set the Size
to 3 px, Position to Inside, and color to black.
by John Shaw