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

Text

The plain text document format.

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.

Markdown

A markup language used to add formatting to plain text documents.

OpenAPI

A specification language for defining HTTP APIs, typically written in YAML or JSON.

RDF

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

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.

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.

XML

A markup language and file format for storing, transmitting, and reconstructing arbitrary data.

WebAssembly

A portable binary code format that can be run in modern web browsers with near-native performance.

LLMs.txt

A proposed standard that provides structured content and instructions to guide large language models in understanding and summarizing a website's content.

XMP

An ISO standard for creating, processing, and exchanging metadata for digital documents.

IDN

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