Mediawiki.org 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
Meta Robot
This page contains a meta robots tag which tells search engines and robots to index or not index 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
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.
JSON-LD
JSON-LD, or JavaScript Object Notation for Linked Data, is a method of transporting Linked Data using JSON.
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.
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.
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.