Script to cleanup the different image sizes wordpress creates and just keep the original file

image-cleanup-wordpress.rb

#!/usr/bin/ruby

pattern = /-\d+x\d+\.(jpg|png|jpeg)/ # my-file-name-pattern-2000x2000.jpg

files = Dir.glob("/path/to/wordpress/wp-content/uploads/20XX/**/*.*")

files.sort!

files.each do |file|
  if pattern =~ file
    puts 'Deleting ' + file
    File.delete(file)
  end
end