OpenSearch

A specification that describes a website's search engine, enabling browsers, apps, and services to discover and integrate it.

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

Text

The plain text document format.

OpenAPI

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

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.

Prerender

The rel="prerender" attribute on HTML elements.

XML

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

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 markup language used to add formatting to plain text documents.

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.

Humans.txt

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

A non-proprietary protocol for encrypting email using public key cryptography.

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.

XMP

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