We previously talked about what Preconnect is and why you should implement it on your website. In this occasion we will talk about DNS Prefetch, a similar technique.

What is DNS Prefetch?

You probably know that domains exist just so we don’t have to remember the IPs of the servers of every website. Resolving a domain to an IP address is a process that takes some time, usually around 20-120ms, and that is done for every external domain that your website includes. Wouldn’t it be nice if these connections were made in the background while your page is loading, so when the actual resources need to be downloaded it all would take less time? That’s what DNS Prefetch does.

We have already written about how important are WebP images, and how the new AVIF format file is going to be better than WebP. But the most important question remains: how do I add AVIF images to my site? How do I add WebP images to my site?

The answer is ShortPixel.

How to serve WebP or AVIF from WordPress

If you have a WordPress site, and you probably do as more than 40% of all websites use WordPress, you have multiple ways to serve WebP or AVIF files.