User-Agent: *
Disallow: /files/
Disallow: /files/main/
Disallow: /site/wp-content/uploads/

#Block All Images
Disallow: *.gif
Disallow: *.jpg
Disallow: *.pdf
Disallow: *.ppt
Disallow: /*.gif$
Disallow: /*.jpg$
Disallow: /*.pdf$
Disallow: /*.ppt$

User-agent: Googlebot-Image
Disallow: /files/