cache: If you include other words in the query, Google will highlight those words within the cached document. For instance, [cache:
www.google.com web] will show the cached content with the word "web" highlighted.
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The query [cache:] will show the version of the web page that Google has in its cache. For instance, [cache:
www.google.com] will show Google's cache of the Google homepage. Note there can be no space between the "cache:" and the web page url.
link: The query [link:] will list webpages that have links to the specified webpage. For instance, [link:
www.google.com] will list webpages that have links pointing to the Google homepage. Note there can be no space between the "link:" and the web page url.
related: The query [related:] will list web pages that are "similar" to a specified web page. For instance, [related:
www.google.com] will list web pages that are similar to the Google homepage. Note there can be no space between the "related:" and the web page url.
This functionality is also accessible by clicking on the "Similar Pages" link on Google's main results page, and from the Advanced Search page, under Page Specific Search > Similar.
info: The query [info:] will present some information that Google has about that web page. For instance, [info:
www.google.com] will show information about the Google homepage. Note there can be no space between the "info:" and the web page url.