"CSS sprites" is a technique of combining multiple images into one large image and using CSS to display appropriate pixels from it at different locations on a web page. This used to be a very common technique a few years ago.
The downside is that this makes the entire page structure complex and less flexible. In addition, even if only one arrow is to be used, a large image needs to be loaded, which increases the overall weight of the page. Adding another icon via a sprite is time-consuming, as you must first modify the image and ensure that it does not use any pixels that have been used elsewhere on the site. This can lead to several errors in the site design. Similarly, changing the size of an HTML element that displays an icon from a large image will require you to resize the icon on the large image and reposition all icons on the image that appear after it.
This is complicated and offers little benefit, since 2 can do almost algeria mobile databasethe same job for you. 2 can multiplex multiple requests and responses on the same connection. Another benefit of not using CSS sprites is that only such images or icons that are absolutely needed on the page will load. The browser can even prioritize above the fold icons and place them below the fold images for later, further speeding up page loads.
So if you use 'CSS Sprites' for small images, it is better to let them load freely and let the browser decide how to prioritize their requests and which one to request at a time.
12. Update frequently
WordPress 5.5 is about to be released and will add support for native lazy loading of images. As a result, sites that relied on plugins to use this functionality will now have a native lazy loading solution built into WordPress core.