Performance
Lab data — simulated mobile 22
Before 42 After
Lab metrics
Metric
Before
With Turbulence
Speed Index SI
Before: 8.5 s
After: 5.5 s -35%
First Contentful Paint FCP
Before: 5.5 s
After: 3.0 s -46%
Largest Contentful Paint LCP
Before: 12 s
After: 11 s -12%
Cumulative Layout Shift CLS
Before: 0.143
After: 0.005 -97%
Total Blocking Time TBT
Before: 4.3 s
After: 1.2 s -72%
What changed (5)
- Resource hints injected Browser knows what to fetch early
- CSS and JavaScript minified and edge-cached Stylesheets and scripts load faster with smaller, cached files
- Images re-encoded to AVIF/WebP Smaller image files that look the same
- scripts Improves page load speed and visitor experience.
- Font display swap + DNS preconnect Text shows up while fonts load
How we measured this
- 1. We fetched your page and scored it with PageSpeed Insights (mobile, lab data).
- 2. We re-fetched it through a Turbulence preview environment that applies our transformation pipeline.
- 3. We scored the result with PageSpeed Insights again.
- 4. The deltas above are the difference — a directional estimate, not a forecast. First visits, geographic location, network conditions, and JS-rendered content all affect real-world results.