“Async” refers to asynchronous loading techniques which is used to enhance website performance and user experience. Asynchronous loading allows web elements, such as scripts or images, to load independently from the main content of a webpage. This means that while one part of the page is being rendered, other parts can continue to load simultaneously without causing delays. The primary benefit of using async methods is improved page speed, which is crucial for SEO rankings. Faster-loading pages tend to provide better user experiences, leading to lower bounce rates and higher engagement. These are both important metrics considered by search engines like Google when determining site rankings.
An example of Async is when JavaScript files are loaded asynchronously, they do not block the rendering of HTML content. Instead, users can interact with visible elements on the page while additional resources are still being fetched in the background. This approach contrasts with synchronous loading methods where all resources must be fully loaded before any content becomes accessible.
