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The Alexa Web Information Service provides the following operations:

URL Information

The URL Information operation gives developers direct access to information pertaining to Web pages and sites on the Web that Alexa Internet has gathered through its extensive Web crawl and Web usage analysis. Examples of information that can be accessed are site popularity, related sites, detailed usage/traffic stats, supported character-set/locales, and site contact information. This is most of the data that can be found on the Alexa Web site and in the Alexa toolbar, plus additional information that is being made available for the first time with this release.

Web Search

The Web Search operation is a brand new search index based on Alexa's extensive Web crawl. The search query format is similar to a Google query and allows up to 1,000 results per page. This service allows developers or researchers to create innovative new search applications.

Browse Category

The Browse Category operation allows developers to access all the information available at the Open Directory without the need to download or host the directory database on their own systems. This service returns Web pages and sub-categories within a specified category. The returned URLs are filtered through the Alexa traffic data and then ordered by popularity.

Web Map

The Web Map operation gives developers access to links-in and links-out information for all pages in the crawl. For example, given and URL as an input, the service returns a list of all links-in and links-out to or from that URL. This Web map information can be used as inputs to search-engine ranking algorithms such as PageRank and HITS, and for Internet research.

Crawl Meta Data

The Crawl Meta Data operation gives developers access to metadata collected in Alexa's Web Crawl. For example, a developer can get pages size, checksum, total links, link text, images, frames, and anyu Javascript-embedded URLs for any page in the crawl.

Want to learn more? Read the documentation.

• The Alexa Web Information Service is designed to allow developers to build applications and/or services utilizing Alexa data.
• Please see the Amazon Web Services Licensing Agreement for more details.
• If you choose to sign up for this service, you will be asked to agree to the Alexa Web Information Service Terms.