Google Apps & Services. The Invisible Web: A Beginners Guide to the Web You Don't See. By Wendy Boswell Updated June 02, 2016. What is the Invisible Web? The term "invisible web" mainly refers to the vast repository of information that search engines and directories don't have direct access to, like databases. Unlike pages on the visible Web (that is, the Web that you can access from search engines and directories), information in databases is generally inaccessible to the software spiders and crawlers that create search engine indexes. How Big is the Invisible Web? The Invisible Web is estimated to be literally thousands of times larger than the Web content found with general search engine queries. The major search engines - Google, Yahoo, Bing - don't bring back all the "hidden" content in a typical search, simply because they can't see that content without specialized search parameters and/or search expertise. continue reading below our video Why Is It Called "The Invisible Web"?
Spiders meander throughout the Web, indexing the addresses of pages they discover. Humanities.