A backward-compatible CSS language extension inspired by Sass that supports variables, mixins, operations, and functions.

Text

The plain text document format.

WCAG

The Web Content Accessibility Guidelines are an international standard developed by the W3C that defines how to make web content, including text and media, accessible to people with disabilities.

A proposed open standard for using rel-me links to profiles on OAuth supporting services to authenticate via either those profiles or your own site.

RDF

A W3C standard model to describe and exchange graph data on the web.

Webmention

A simple protocol to notify any URL when a website links to it, and for web pages to request notifications when somebody links to them.

XML

A markup language and file format for storing, transmitting, and reconstructing structured data in a platform-independent way.

Prerender

The rel="prerender" attribute on HTML elements.

JSON Web Token

An open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object.

Markdown

A lightweight markup language used to add formatting to plain text documents using simple, human-readable syntax.

Humans.txt

A text file that can be created by developers to list the people who have contributed to a website.

Rack

A minimal, modular interface and invocation convention that operates between Ruby web servers and web applications to standardize how HTTP requests and responses are exchanged.

XRDS

An XML-based file format that provides a list of service endpoints (e.g., OpenID) available on a website.

WebAssembly

A portable binary instruction format that runs in modern web browsers with near-native performance, enabling frontend coding in languages that were not traditionally used for web interfaces, such as C/C++, C#, and Rust.

IDN

Internationalized Domain Names allow people around the world to use domain names in local languages, such as Arabic, Chinese, or Cyrillic.