Speed is a business problem
The impact of a slow site is concrete and measurable.
What the data says
- A 1-second delay reduces conversions by 7%
- 53% of mobile users abandon sites that take over 3 seconds to load
- Google's algorithm incorporates Core Web Vitals
Where the time goes
- Unoptimised images — convert to WebP/AVIF, lazy-load below the fold
- Too much JavaScript — code-split and defer non-critical scripts
- No CDN — serving from a single origin adds latency for distant users
- Render-blocking resources in the
<head> - Slow hosting with poor TTFB
The 80/20
Fixing images and bundle size solves 80% of performance problems. Start there.
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