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Site Info - Cdc.gov
Overview of web technologies used by Cdc.gov.
Centers for Disease Control and PreventionAs the nation’s health protection agency, CDC saves lives and protects people from health, safety, and security threats.
Description on Homepage
Number 1,762 of all websites according to Alexa
Main visitors locations
Microsoft's Active Server Pages technology on the .NET framework.
HTML5 is the fifth revision of the HTML standard.
UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.
PNG (Portable Network Graphics) is a lossless compression image format, suitable to store graphics with uniformly colored areas, and originally introduced as a free, open-source successor of GIF.
JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.
Scalable Vector Graphics (SVG) is an XML-based vector image format.
External Cascading Style Sheets define style rules in a separate CSS file.
Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.
Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.
Gzip (GNU zip) is a file compression algorithm.
The Internet Protocol version 6 (IPv6) provides amongst others a vastly larger address space than the preceding version 4. We consider a website to support IPv6 if a 128-bit address is assigned to it, regardless of the content delivered at that address.
HTTP Strict Transport Security (HSTS) defines a mechanism enabling web sites to declare themselves accessible only via secure connections.
The websites redirects visitors to its www subdomain, e.g. from example.com to www.example.com.
The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.
The Open Graph protocol, originally developed by Facebook, is an RDFa-based format that enables any web page to become a rich object in a social graph.
Twitter Cards enable automatic attachment of photos, videos and media elements to Tweets.
Microdata is a specification to integrate metadata within existing content on web pages.
Generic RDFa (Resource Description Framework in attributes) is RDFa without further specialization.
The Dublin Core Schema is a set of vocabulary terms that can be used to describe web resources and physical resources.
DigiCert is an SSL certificate authority. This includes Verizon, whose Enterprise SSL Business has been acquired by DigiCert.
Verisign is an SSL certificate authority owned by DigiCert.
Adobe Analytics is a web site traffic analysis service formerly called Omniture. Its products include SiteCatalyst, WebSideStory and Hitbox.
The Internet Information Services (IIS) are a set of Internet-based services for Windows, developed by Microsoft.
Windows is a popular operating system produced by Microsoft.
Akamai is a content delivery network.
United States Government
The technology score rates a site based on its technologies in a range from 0 to 100. It consists in a popularity score (how many sites use the same technologies), a traffic score (how much traffic have other sites using the same technologies) and a version score (how many sites use more recent technology versions). Quality alerts also affect the rating.
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