![]() Rather, it's only seen once they scroll further down the page. Often this content is not immediately visible in the user's viewport. Third-party embeds cover a wide range of use cases, from video players, to social media posts, to ads. This demo of shows lazy-loading video embeds: Why should we lazy-load iframes? # This saves data, speeds up the loading of other parts of the page, and reduces memory usage. Standardized lazy-loading of iframes defers offscreen iframes from being loaded until the user scrolls near them. We are happy to share that browser-level lazy-loading for iframes is now standardized and is also supported in Chrome and Chromium-based browsers. Standardized lazy-loading for images landed in Chrome 76 via the loading attribute and later came to Firefox.
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