Here is the place of the HTML specification in the web platform specification stack. The image itself shows a list of other web platform specifications, such as CSS, SVG, MathML, Service Workers, IDB, Fetch, CSP, AV1, Opus, PNG, HTTP, TLS, DOM, Unicode, Web IDL, MIME, URL, XML, and JavaScript Encoding.
The implication is that the HTML specification is at the core of the web platform, and that all of the other specifications listed are built on top of it. This is because HTML is the markup language that is used to create web pages, and all of the other specifications define additional features and functionality that can be added to web pages.
- CSS: Cascading Style Sheets (CSS) is a language that describes the presentation of a web page, including the layout, colors, and fonts.
- SVG: Scalable Vector Graphics (SVG) is a language that describes vector graphics, which are images that are made up of mathematical shapes.
- MathML: Mathematical Markup Language (MathML) is a language that describes mathematical expressions.
- Service Workers: Service workers are scripts that run in the background and can intercept and handle network requests, cache assets, and provide offline functionality.
- IDB: Indexed Database (IDB) is a NoSQL database that can be used to store data on the client side.
- Fetch: The Fetch API is a modern way to make HTTP requests.
- CSP: Content Security Policy (CSP) is a security measure that can be used to restrict the types of resources that a web page can load.
- AV1: AV1 is a video codec that is more efficient than previous codecs, such as H.264.
- Opus: Opus is an audio codec that is designed to be both efficient and high-quality.
- PNG: Portable Network Graphics (PNG) is a lossless image format.
- HTTP: Hypertext Transfer Protocol (HTTP) is the protocol that is used to transfer web pages over the internet.
- TLS: Transport Layer Security (TLS) is a security protocol that is used to encrypt HTTP traffic.
- DOM: Document Object Model (DOM) is a representation of a web page in memory.
- Unicode: Unicode is a standard that defines the encoding of characters.
- Web IDL: Web Interface Definition Language (Web IDL) is a language that is used to define the interfaces between JavaScript and other web technologies.
- MIME: Multipurpose Internet Mail Extensions (MIME) is a standard that defines the format of email messages.
- URL: Uniform Resource Locator (URL) is a standard for identifying resources on the internet.
- XML: Extensible Markup Language (XML) is a markup language that is used to store and exchange data.
- JavaScript: JavaScript is a programming language that is used to add interactivity to web pages.
