Lazy Loading Images in React for Better Performance

Lazy Loading Images in React for Better Performance

In some cases, we need to load a list that contains a lot of images on a single page. Most of the images not even visible on the screen when it is loaded. We need to scroll down to see them. By default, when we open the page, the browser would load and request all the images on the page regardless if it’s visible on the viewport or not.

In some cases, we need to load a list that contains a lot of images on a single page. Most of the images not even visible on the screen when it is loaded. We need to scroll down to see them. By default, when we open the page, the browser would load and request all the images on the page regardless if it’s visible on the viewport or not. That’s perfectly fine in some conditions, but when we have a lot of images that are not visible on the viewport and load all of them at the same time, that may lead to performance issues. In that condition, it’s better to only load the images that appear on the viewport. It improves the performance cause the browser will postpone loading the images below the viewport until the user scrolls the page and reach the images.

web-performance javascript lazy-loading react

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