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Site Info - Cdc.gov

Overview of web technologies used by Cdc.gov.

Website Background

Centers for Disease Control and Prevention
As the nation’s health protection agency, CDC saves lives and protects people from health, safety, and security threats.

Description on Homepage

Number 2,181 of all websites according to Alexa

Popularity rank

CountryVisitorsCountry Rank
United States63.9%519
India6%3,011
Mexico2.4%1,326
CityVisitorsCity Rank
New York, NY, US4.6%670
Los Angeles, CA, US3.6%726
San Francisco, CA, US3%671

Main visitors locations

Microsoft's Active Server Pages technology on the .NET framework.

ASP.NET

JavaScript is a lightweight, object-oriented, cross-platform scripting language, mainly used within web pages.

JavaScript

jQuery is a JavaScript library that simplifies HTML document traversing, event handling, animating and Ajax interaction. Originally developed by John Resig.

jQuery

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the visitors browser.

Modernizr
(used until recently)

HTML5 is the fifth revision of the HTML standard.

HTML5

UTF-8 (8-bit Unicode Transformation Format) is a variable-length character encoding for Unicode, which is backwards compatible with ASCII.

UTF-8

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.

PNG

JPEG (Joint Photographic Experts Group) is a lossy compression method suitable to store photographic images.

JPEG

Scalable Vector Graphics (SVG) is an XML-based vector image format.

SVG

External Cascading Style Sheets define style rules in a separate CSS file.

External CSS

Inline Cascading Style Sheets define style rules directly within an (X)HTML element using the style attribute.

Inline CSS

Gzip (GNU zip) is a file compression algorithm.

Gzip Compression

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.

IPv6

HTTP Strict Transport Security (HSTS) defines a mechanism enabling web sites to declare themselves accessible only via secure connections.

HTTP Strict Transport Security

The websites redirects visitors to its www subdomain, e.g. from example.com to www.example.com.

Default subdomain www

The websites redirects visitors to use SSL encryption, e.g. from http://example.com/ to https://example.com/.

Default protocol https

Embedded Cascading Style Sheets define a set of style rules in a <style> element within a web page.

Embedded CSS
(used until recently)

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.

Open Graph

Twitter Cards enable automatic attachment of photos, videos and media elements to Tweets.

Twitter Cards

Microdata is a specification to integrate metadata within existing content on web pages.

Microdata

Generic RDFa (Resource Description Framework in attributes) is RDFa without further specialization.

Generic RDFa

The Dublin Core Schema is a set of vocabulary terms that can be used to describe web resources and physical resources.

Dublin Core

Entrust is an IT security service provider, also operating as SSL certificate authority.

Entrust

DigiCert is an SSL certificate authority. This includes Verizon, whose Enterprise SSL Business has been acquired by DigiCert.

DigiCert
(used until recently)

Adobe Analytics is a web site traffic analysis service formerly called Omniture. Its products include SiteCatalyst, WebSideStory and Hitbox.

Adobe Analytics

The Internet Information Services (IIS) are a set of Internet-based services for Windows, developed by Microsoft.

Microsoft-IIS 7.5
(57% of sites use a newer version)

Windows is a popular operating system produced by Microsoft.

Windows

Akamai is a content delivery network.

Akamai
hosting info based on data from ipinfo.io

United States Government

.gov

United States
Netherlands

English

 

 

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