"As the HTTP Archive reminds us, video and audio files are some of the heaviest resources requested by web pages. This new standard will dramatically reduce page weight and ease resource overhead all through a simple declarative HTML attribute. Lazy audio and video works just like lazy-loading of image and iframe elements work today: just add loading="
Squarespace's team has been standardizing lazy-loading for HTML video and audio elements, a feature that began as an issue in 2024 and has rapidly progressed over three months. The HTML spec proposal, platform tests, and browser patches have undergone extensive review, with support now available behind a flag in Chrome Canary. Video and audio files represent some of the heaviest resources on web pages, so this standardized lazy-loading feature will significantly reduce page weight through a simple declarative HTML attribute. The implementation works similarly to existing lazy-loading for images and iframes, allowing developers to add a loading attribute to defer resource loading.
#html-lazy-loading #web-standards #video-and-audio-optimization #performance-improvement #browser-support
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