The Number Most Business Owners Don't Know
53% of mobile users abandon a website that takes more than 3 seconds to load. More than half. Gone before they've seen a single thing about your business.
That number is from Google's own mobile performance research, published on the Google Ad Manager blog. It's not an industry estimate — it's what Google measures across its own ad network.
And it gets worse: Google uses Core Web Vitals as a ranking factor. A slow site doesn't just lose visitors — it loses rankings, which means fewer visitors in the first place.
What Slow Actually Means
Go to pagespeed.web.dev and run your website. Google will give you a score from 0 to 100.
- 90–100: Fast. Your site is not losing customers to speed.
- 50–89: Needs improvement. You're losing some visitors.
- 0–49: Slow. You're actively damaging your business.
Most small business websites score in the 30–60 range on mobile. That means they're failing more than half the people who visit them on a phone.
Why WordPress Sites Get Slow
WordPress is the most common culprit — not because WordPress is bad, but because it's easy to make slow. It powers 43.5% of the web, and most of those sites carry baseline performance problems.
Hostinger's 2025 website load time statistics put the average WordPress site at 2.5 seconds on desktop but 13.25 seconds on mobile — 4.65 seconds slower than the cross-platform mobile average. Mobile is where most traffic is, and mobile is where WordPress struggles most.
The usual causes:
- Too many plugins, each adding load time
- Cheap shared hosting that can't keep up with real traffic
- Unoptimized images loading at full resolution
- Themes bloated with features you're not using
- No caching or CDN configuration
A WordPress site built carelessly on shared hosting can score under 30 on mobile PageSpeed. The same site properly optimized on managed hosting can reach 80+. The platform isn't the problem on its own — how it's configured is.
Why Next.js Sites Are Fast By Default
Next.js is fast by design. Pages are pre-built and served from a CDN, meaning there's no database query or server processing on each page load. Images are automatically optimized. JavaScript is split so only what's needed loads first.
Chrome team data reports that top-performing sites average around 1,220ms for Largest Contentful Paint. A well-built Next.js site typically sits in that range — roughly half the time of the average WordPress site on desktop, and dramatically faster on mobile.
The Three Metrics That Matter
Google uses three Core Web Vitals as ranking signals:
Largest Contentful Paint (LCP): How long until the main content is visible. Target: under 2.5 seconds.
Interaction to Next Paint (INP): How quickly the page responds to user interactions. Replaced First Input Delay in March 2024. Target: under 200ms.
Cumulative Layout Shift (CLS): How much the page jumps around while loading. Target: under 0.1.
These are the signals Google uses to rank pages on real user experience, not just subjective quality. A site that fails on any of them loses ranking and conversions simultaneously.
What To Do About It
If your site scores below 70 on mobile PageSpeed, here's where to start — in order of impact:
- Upgrade your hosting. If your Time to First Byte is over 600ms, hosting is the bottleneck and nothing else matters until it's fixed
- Compress and resize images. Unoptimized images are the single biggest performance killer on most sites
- Audit your plugins. Remove anything you're not actively using
- Enable caching. Either at the hosting level or via a plugin like WP Rocket
- Consider a platform migration. If you've done all of the above and still can't hit acceptable scores, the problem is architectural
Get a Performance Audit
Every Vizantir project starts with a performance review — we measure your current scores, identify the specific issues hurting you, and give you the numbers before any commitment. Book a strategy call and we'll show you exactly what's costing you rankings and revenue.