Lazy Load: Breakdown
The Lazy Load plugin works by using JavaScript to detect when a user is about to scroll to a location on the page containing images. Before images are actually loaded, a placeholder for each image is created and used until the user is about to view it, at which point the full image is displayed. This allows for only the necessary images to be loaded instead of consuming resources by pre-loading all images on the page. The plugin also removes any wasteful calculations taking place when a browser attempts to resize images, as these calculations are only done when the image is actually loaded.
The plugin is straightforward to install, with the process taking just a few clicks. Upon activation, the plugin is ready to use with the default settings. However, users also have the option to customize the display of the placeholder image(s) and enable the deferring of images which are external to the website. There are more advanced configuration options as well, allowing users to decide which images should be excluded from the plugin’s lazy-loading functionality.
In addition to performance improvements, the plugin can also help to reduce page size and conserve bandwidth. This is especially true for websites which contain a lot of images, as only the images which are actually being viewed will consume resources. This has the added benefit of increasing page speed, which is an important factor in achieving higher rankings in search engines.