Lazy loading has long been a widely used technique in web development to improve page loading speed and user experience. The concept is simple: instead of loading all page elements at once, heavier components are delayed until they are actually needed. This allows lighter elements of a webpage to load first, enabling users to interact with the content more quickly.
Since 2019, Google Chrome has supported lazy loading for images and iframes. These elements only begin loading when a user scrolls close to them on a webpage. This approach helps reduce initial page load times, lowers bandwidth consumption, and improves performance, especially on slower internet connections or mobile devices.
Now, Google is planning to expand this feature even further. The company has announced that it is currently testing lazy loading support for video and audio elements within the browser. This means multimedia content embedded in HTML <video> and <audio> tags could also be deferred until users scroll near them.
Although video and audio elements are not as commonly used as images or iframes across the modern web, they still play an important role on many websites, including media platforms, educational portals, and news outlets. By applying lazy loading to these elements, browsers can further reduce unnecessary data usage and improve page responsiveness.
The new feature is reportedly being tested for Chrome 148, which will be available on both desktop and mobile platforms. If the testing phase proves successful, the enhancement could significantly improve how multimedia-heavy websites load and perform.
Since Google plans to implement the change directly in the Chromium codebase, the feature is expected to benefit more than just Chrome users. Other browsers built on Chromium, such as Microsoft Edge, are also likely to adopt the capability once it becomes part of the shared code.
Overall, the expansion of lazy loading to include video and audio elements highlights Google’s continued efforts to optimize web performance. By minimizing unnecessary resource loading, the feature could help deliver faster browsing experiences across a wide range of devices and internet speeds.