Ar Stack

Ar.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.

Mobile

Viewport Meta

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

Apple Mobile Web Clips Icon

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

Document Standards

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

Canonical Content Tag

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

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.

Srcset

Adapting images for high-resolution and low-resolution displays.

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.

X-XSS-Protection

X-XSS-Protection is a HTTP header set by Internet Explorer 8+. This header lets domains toggle on and off the "XSS Filter" of IE8, which prevents some categories of XSS attacks.

Content Type Options

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

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.