HTML5 is the fifth and current major version of HTML, introduced with significant new capabilities that reduced the web's reliance on third-party plugins like Flash for handling multimedia and interactivity — native video and audio, richer semantic structure, and better support for mobile devices among them.
What HTML5 Introduced
- Native `<video>` and `<audio>` tags, removing the need for separate plugins
- Semantic elements like `<header>`, `<footer>`, and `<article>`, giving pages more meaningful structure
- The `<canvas>` element, enabling dynamic, JavaScript-driven graphics directly in the browser
- Built-in form validation, without relying on additional JavaScript
- Genuinely improved support for mobile and touch-based devices
Why It Was a Meaningful Shift
Before HTML5, playing video on a webpage typically required Flash — a plugin that was slow, insecure, and unavailable on many mobile devices. HTML5's native support for media effectively made Flash unnecessary, which is a large part of why it's now essentially extinct across the modern web.
Relevance to WordPress Today
Every current WordPress theme is built on HTML5 as a baseline. Practically, this means native video embeds, cleaner and more accessible page structure, and dependable, consistent behaviour across both desktop and mobile browsers — all without a site owner needing to think about any of it directly.
« Back to Index