June 06, 2013, 1:17 PM — Here's a very quick way to stop Spotlight from indexing certain files on your Mac.
1. Find the file you want to hide.
2. Change the name of the file to include .noindex.
For example, if your file was named "sugar" then you'd want to rename it to be "sugar.noindex."
For more, see the original article at the link below.