Quick answer
A slow website costs leads because visitors leave before the page finishes loading, especially on mobile. Google measures speed with Core Web Vitals: Largest Contentful Paint should be 2.5 seconds or less, Interaction to Next Paint 200 milliseconds or less, and Cumulative Layout Shift 0.1 or less. Compressing images, cutting heavy scripts and good hosting fix most problems.
You tap a search result. A white screen. The logo appears, then jumps down as a banner loads above it. You try to tap “Call now” and hit an ad instead. You go back and pick the next result. That whole experience took four seconds, and the business never knew you were there.
What are Core Web Vitals?
Core Web Vitals are Google's three measurements of how a page feels to a real visitor. They come from real Chrome users, so you see them in Search Console and PageSpeed Insights.
- LCP (Largest Contentful Paint): how long until the main content shows. Good is 2.5 seconds or less.
- INP (Interaction to Next Paint): how quickly the page responds when someone taps or clicks. Good is 200 ms or less.
- CLS (Cumulative Layout Shift): how much the page jumps around while loading. Good is 0.1 or less.
Speed is a ranking factor, but a light one. The bigger reason to care is conversions: every paid click and every organic visit lands on your website, so a slow page raises the cost of all your marketing at once.
The fixes that make the biggest difference
In my experience building client sites, the same handful of problems cause most of the slowness. Fix these before buying a new theme.
- Oversized images. A 4 MB photo from a phone, scaled down by the browser. Resize, compress and serve WebP or AVIF.
- Too many plugins and third-party scripts. Chat widgets, sliders, five tracking pixels. Each adds weight. Remove what you don't use.
- No caching or CDN. Static pages should be cached and served from a server near the visitor.
- Web fonts loading late. Self-host fonts, load only the weights you use, and set font-display: swap.
- Cheap shared hosting. If the server takes a second to respond, nothing else can fix it.
- Images and ads without set sizes. Reserve space so content doesn't jump, which fixes most CLS problems.
WordPress, Shopify or Next.js?
Any of them can be fast. A lean WordPress theme with good caching passes Core Web Vitals comfortably. Shopify handles hosting for you, but apps can quietly add scripts to every page. Next.js on Vercel (what this website runs on) gives the most control over speed, which is why we use it for lead-gen sites where every second counts.
How to check your site today
Run your homepage and your top service page through Google PageSpeed Insights. Look at the field data at the top (real users), not just the lab score. Then open Search Console's Core Web Vitals report to see which groups of pages fail.
If the results are red, our web design and development team can audit and fix the site, or rebuild it if that's cheaper long term. Faster pages also make your Google Ads cheaper, since landing page experience affects Quality Score.
