Speed test results
Measured with Google Lighthouse against the live homepage at qubax.ai. Last tested August 2026.
94
Mobile
Performance score
99
Desktop
Performance score
Core Web Vitals
| Metric | Mobile | Desktop | Rating |
|---|---|---|---|
| First Contentful Paint | 1.5s | 0.5s | Good |
| Largest Contentful Paint | 2.9s | 1.0s | Needs improvement |
| Total Blocking Time | 70ms | 20ms | Good |
| Cumulative Layout Shift | 0 | 0 | Good |
| Speed Index | 1.6s | 0.7s | Good |
What this means for you
- ✓Zero layout shift. The page never jumps or reflows as it loads.
- ✓Under 1 second to first paint on desktop. Content appears immediately.
- ✓597 KB total page weight. No bloated frameworks or tracking scripts.
- ✓140ms server response time. The API and CDN are fast.
- ✓Server-side rendered. No blank screen while JavaScript loads.
How we keep it fast
The landing page is 267 lines of server-rendered HTML with minimal client-side JavaScript. We use Next.js App Router with streaming SSR, WebP image optimization, system fonts with a single loaded display face, and no third-party tracking scripts beyond PostHog. The homepage ships less JavaScript than a single React component in most enterprise apps.
Test methodology: Google Lighthouse 13.4.1, simulated 4G throttling (9Mbps down, 1.5Mbps up, 150ms RTT) for mobile. No throttling for desktop. Tested against https://qubax.ai on August 7, 2026.