Protecting Information from being cached by Public Search Engines

For Webmasters

To protect a Website from being Cached.

Through robot.txt

Some crawlers for search engines obey the Robot Exclusion Standard. We can simply include a "robots.txt" file to a root directory of web servers to tell crawlers what pages to be excluded. The "robots.txt" should look like the following:

User-agent: *
Disallow: /cgi-bin/
Disallow: /private/

For Webmasters and Web Publishers

To protect Web pages from being cached.

Through Meta tags

Another method is to add a NOINDEX tag to web pages those we want to exclude.

For Yahoo and Google, the tag should look like
<META NAME="robots" CONTENT="noindex">

For MSN, the tag should look like
<META NAME="*" CONTENT="noindex" />


  1. Yahoo
  2. MSN
    Visit the following URL and select "How do I control which pages of my website are indexed?"
  3. Google