Page load over 3 seconds on mobile bleeds leads. Every 1-second delay on mobile drops conversion roughly 7% (Google's published number, confirmed in field data across thousands of accounts). The 4-second-load site converts at roughly half the rate of the 1.5-second-load site, on the same traffic, with the same copy. It's one of the few problems on a website where the fix is purely technical and the lift is large, fast, and measurable.
How to tell if your site is slow
- Run PageSpeed Insights (pagespeed.web.dev). Mobile score under 70 = slow. Under 50 = critically slow.
- Check Search Console's Core Web Vitals report. "Good" rate under 60% = slow.
- Test on your actual phone with a fresh cache. If it feels slow to you, it's slow.
- Ask three real users. Their answer is more accurate than any tool's answer.
The fix order
- Audit with Lighthouse (Chrome DevTools) and PageSpeed Insights to identify the specific bottlenecks.
- Compress the hero image — usually the biggest LCP offender. Convert to WebP, serve at 2x display resolution max.
- Defer non-critical JavaScript — chat widgets, analytics scripts, tracking pixels.
- Fix layout shift (CLS) — usually caused by missing image dimensions or ad/embed slots that load late.
- Move to a fast host — Vercel, Cloudflare Pages, or equivalent. WordPress on shared hosting almost guarantees slow.
- Reduce CSS/JS payload — code-splitting, tree-shaking, removing unused libraries.
Targets
Largest Contentful Paint under 2.5s. Interaction to Next Paint under 200ms. Cumulative Layout Shift under 0.1. Lighthouse mobile score above 90. Real-world (CrUX) "Good" rate above 75% in Search Console.
Pairs with the page speed optimization solution and the page speed for leads topic.
Want a second look at your site?
If you want a second look at how this applies to your site — drop your URL into the free website audit and I'll tell you exactly where this applies. The audit runs server-side, checks 19 specific signals across SEO, performance, mobile, and accessibility, and surfaces a score with prioritized fixes. No sales pitch attached — the score is yours either way, whether or not you ever talk to me.
If you'd rather talk it through with a real person, send me a note and we'll set up 30 minutes. I'll come prepared — I'll have already looked at your site before the call, and the conversation starts from what I see, not from a generic discovery script. The fastest way to know whether what's described above is the right next move for your specific situation.
