Site load speed is important because a fast website ranks as well as converts better. Google has indicated that site speed is one of the criteria used by its algorithm to rank pages. You can test your site load speed by using: Pingdom, GTmetrix, Google PageSpeed Tool.
So how can you improve site load speed? Website Mobile Speed and SEO Optimization Tips
You have to make sure that your images are not larger than they need to be. Try to keep image size less by using the appropriate format (JPEG or PNG).
Use CSS image sprites to reduce site load time. An image sprite is a collection of images put into one image. They prevent web pages from generating multiple server requests which save bandwidth and in turn reduces site load speed.
Your visitor faces additional time waiting for the HTTP request-response cycle to complete, each time a page redirects to another page.
SWITCH TO FASTER HOSTING PROVIDER
Some sites may load slowly even after doing everything. The problem could be your hosting provider.LiquidWeb, WPEngine and BlueHost are some of the best hosting companies that are fast and reliable (We use LiquidWeb as our hosting provider).
USE GOOGLE AMP
AMP gives your pages a boost in rankings and Google is giving preference to them. I won’t go into detail as we’ve already discussed it.
HAVE RESPONSIVE DESIGN
Google prefers responsive design but supports all types of site configurations. Here are some pros and cons of each provided by Moz.