Wikidata Stack

Wikidata.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.

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.

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.