A slow website doesn't just annoy visitors. It quietly pushes you down Google's results and sends the people who do find you straight back to your competitors. Since Google made page experience part of how it ranks pages, speed has become one of the few SEO factors you fully control.
What Google measures
Google's Core Web Vitals are three numbers that describe how a page feels to a real visitor:
What slowness costs you
Most of your visitors are on a phone, often on mobile data. Every extra second they wait is a chance for them to hit back and tap the next result. For a school, that's a parent who never sees your admissions page. For a clinic, it's a patient who books somewhere else.
Speed is the first impression. Visitors judge your business before they've read a single word.
Five fixes that matter most
- Compress and resize images. Serve modern formats like WebP at the size they're displayed.
- Cut unused plugins and scripts. Each one adds weight, and many load on every page.
- Use good hosting and a CDN. Your server's response time sets the floor for everything else.
- Reserve space for images and embeds. Set dimensions so the layout doesn't jump.
- Load what's below the fold later. Lazy-load images and defer non-essential code.
Check your own site
Run your homepage through Google PageSpeed Insights and look at the mobile score first. If any of the three Core Web Vitals are amber or red, start with the fixes above. They usually make the biggest difference for the least effort.