User-agent: *
Disallow: /private/To block Google from crawling all pages under a directory use the entry in your robots.txt file:
User-agent: Googlebot
Disallow: /imagesTo block Google from crawling all files of a specific file type use the entry in your robots.txt file:
User-agent: Googlebot
Disallow: /*.gif$To block Google from crawling dynamic pages use the entry in your robots.txt file:
User-agent: Googlebot
Disallow: /*?To block Google from indexing the images on your website use the entry your robots.txt file:
User-agent: Googlebot-Image
Disallow: /
*Rather than use a robots.txt file to block crawler access to pages, you can add a <META> tag to an HTML page to tell robots what to do.
To prevent all robots from indexing a page on your site, you'd place the following meta tag into the <HEAD> section of THAT PAGE:
<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
To allow other robots to index the page on your site, preventing only Google from indexing that page, you'd use the following meta tag into the <HEAD> section of THAT PAGE:
<META NAME="GOOGLEBOT" CONTENT="NOINDEX, NOFOLLOW">
To allow robots to index the page on your site but instruct them not to follow outgoing links, you'd use the following tag:
<META NAME="ROBOTS" CONTENT="NOFOLLOW">
