Hydration reruns the component tree in the browser to attach state and event listeners to HTML rendered by the server. Until it finishes, a visible button may not respond, creating the impression that the page is frozen. Astro’s islands architecture and React 18 selective hydration are examples of approaches designed to reduce this gap between visible content and usable interactions.
Some websites are seeing sharp increases in site: operator queries in Search Console performance reports. Explore possible causes, measurement effects and diagnostic responses.
