Centers for Disease Control and Prevention Stack

https://cdc.gov Centers for Disease Control and Prevention

Cdc.gov is built with the following tech stack:

Document Encoding

UTF-8

UTF-8 (8-bit UCS/Unicode Transformation Format) is a variable-length character encoding for Unicode. It is the preferred encoding for web pages.

Document Standards

X-UA-Compatible

Allows a website to define how a page is rendered in Internet Explorer 8, allowing a website to decide to use IE7 style rendering over IE8 rendering.

Meta Description

The description attribute provides a concise explanation of the page content.

Meta Keywords

Meta tag containing keywords related to the page.

Open Graph Protocol

The Open Graph protocol enables any web page to become a rich object in a social graph, a open protocol supported by Facebook

Twitter Cards

Twitter cards make it possible for you to attach media experiences to Tweets that link to your content.

Meta Robot

This page contains a meta robots tag which tells search engines and robots to index or not index the page.

Cascading Style Sheets

Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in a markup language. Its most common application is to style web pages written in HTML

Web App Manifest

Defines the attributes of a web app in a simple JSON file. It describes how the web app should appear on the users system and how it should launch.

Canonical Content Tag

Public specification of a preferred URL for a page allows search engines to understand the original location for content.

Referrer Policy

Requests made from a document, and for navigations away from that document are associated with a Referrer header. This policy determines in the browser should send a referrer or not.

Javascript

JavaScript is a scripting language most often used for client-side web development.

WAI-ARIA

A way to make Web content and Web applications more accessible to people with disabilities. It especially helps with dynamic content and advanced user interface controls developed with Ajax, HTML, JavaScript, and related technologies.

HTML5 DocType

The DOCTYPE is a required preamble for HTML5 websites.

HTML 5 Specific Tags

This page contains tags that are specific to an HTML 5 implementation.

Content Type Options

Used to disable MIME-sniffing for a particular HTTP response.

Strict Transport Security

The HTTP Strict-Transport-Security (HSTS) header instructs the browser to only use https.

Mobile

Viewport Meta

This page uses the viewport meta tag which means the content may be optimized for mobile content.

IPhone / Mobile Compatible

The website contains code that allows the page to support IPhone / Mobile Content.

Apple Mobile Web App Capable

Launches a web application for Safari on iOS in full-screen mode to look like a native application.

Apple Mobile Web Clips Icon

This page contains an icon for iPhone, iPad and iTouch devices.

SSL Certificates

HSTS

Forces browsers to only communicate with the site using HTTPS.