Performance
Lab data — simulated mobile 47
Before 55 After
Lab metrics
Metric
Before
With Turbulence
Speed Index SI
Before: 10 s
After: 8.7 s -16%
First Contentful Paint FCP
Before: 10 s
After: 8.7 s -16%
Largest Contentful Paint LCP
Before: 12 s
After: 9.6 s -20%
Cumulative Layout Shift CLS
Before: 0.115
After: 0.075 -35%
Total Blocking Time TBT
Before: 264 ms
After: 11 ms -96%
What changed (2)
- Render-blocking resources deferred Page paints before stylesheets finish
- CSS and JavaScript minified and edge-cached Stylesheets and scripts load faster with smaller, cached files
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.