If you’re serious about your WordPress website, you have run a page speed test at some point. There are many variations of these tests out there. Some more convenient and true to your target audience than others. But they all will give you a pretty decent idea of where you can still improve your site. …Read: "How to optimize WordPress after running a page speed test"
Your website’s speed has an impact on almost every bit of “performance” of your website. Speed impacts rankings, it impacts conversions and average pageviews per visitor, basically, not working on your page speed means you’re losing money. Which is why we obsess about it and that is what we write about it in this section.