CGI

An interface specification that enables web servers to execute an external program to process HTTP requests.

A set of criteria defined by the independent Acceptable Ads Committee that allows publishers to reach ad-blocking users with respectful, non-intrusive and relevant ads.

GraphQL

A data query and manipulation language for APIs typically used for remote client-server communications.

Text

The plain text document format.

Trace Context

Defines standard HTTP headers and a value format for propagating context information that enables distributed tracing.

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

XML

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

IDN

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

RelMeAuth

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.

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.

OpenAPI

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

Humans.txt

A plain text file that allows website creators to identify and credit the people involved in developing a website.

Prerender

A deprecated browser hint that instructed web browsers to preload and render a web page in the background before navigation occurred.

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.

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.

OpenTelemetry

An open-source, vendor-neutral observability framework and toolkit for collecting, processing, and exporting telemetry data such as traces, metrics, and logs.

ActivityPub

A decentralized social networking protocol used by various Fediverse services such as Mastodon, Pixelfed, and PeerTube.

XRDS

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

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

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.

ESI

A simple markup language used to define web page components for dynamic assembly and delivery of web applications at the edge of the Internet.

XMP

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