HTML, PHP, and JavaScript can all be described as “the language of the web,” so why is it so hard to write software that deals with all three? In this talk we’re going to explore the new HTML API in WordPress 6.2 and see how it can help us bridge the gap between blocks with their JavaScript and the frontend with its HTML. We’ll preview how we can leverage this new functionality to upgrade blocks on the server, make small modifications and transformations to blocks on render, and do so in a clean and reliable way.