The speed of your website affects both your Google SEO rankings as well as your website visitor conversion rate. If a website loads too slowly your visitors may bounce instead of taking the action you want them to.
Google has it’s own tool called Pagespeed insights that you can use and get a score out of 100 on both mobile and desktop.
GTMetrix is another useful tool to check your website’s speed.
Pingdom allows you to choose a server location and see how fast your website loads from that server.
If you’re looking to speed up a WordPress site the best plugin on the market is definitely NitroPack. You can use it to get scores of 99-100 on Google Pagespeed insights instantly. WPRocket is a good alternative, but is not quite as good a NitroPack.
NitroPack handles lazy loading, image optimization, code optimization, and evening caching so you don’t need other plugins or a CDN like Cloudflare. It’ll handle everything for you when it comes to pagespeed optimization.