View source for Web indexing

'''Web indexing''' (or '''Internet indexing''') refers to various methods for indexing the contents of a [[website]] or of the [[Internet]] as a whole.

== Description ==

Individual websites or intranets may use a back-of-the-book index, while search engines usually use [[Keyword|keywords]] and [[Metadata|metadata]] to provide a more useful vocabulary for Internet or onsite searching.

With the increase in the number of periodicals that have articles online, web indexing is also becoming important for periodical websites.

Back-of-the-book-style web indexes may be called "web site A-Z indexes". The implication with "A-Z" is that there is an alphabetical browse view or interface. This interface differs from that of a browse through layers of hierarchical categories (also known as a taxonomy) which are not necessarily alphabetical, but are also found on some web sites.

Although an A-Z index could be used to index multiple sites, rather than the multiple pages of a single site, this is unusual.

== Metadata web indexing ==

Metadata web indexing involves assigning keywords or phrases to web pages or web sites within a metadata tag (or "meta-tag") field, so that the web page or web site can be retrieved with a search engine that is customized to search the keywords field. 

This may or may not involve using keywords restricted to a controlled vocabulary list.

This method is commonly used by search engine indexing.

== See also ==

* [[Web scraping]]
* [[Web search engine]]

== External Links ==

* [http://en.wikipedia.org/wiki/Web_indexing Web indexing] @ Wikipedia