Customer story · DACH furniture retailer

DACH furniture retailer: Lighthouse 41 → 78 in six weeks, no migration

Performance audit and cleanup without a Hyvä migration. Lighthouse 41 → 78 on mobile, TTFB 1.4s → 380ms, mobile checkout conversion up 9 percent over 30 days.

All stories

Lighthouse mobile: 41 → 78; +37 points
TTFB: 380ms; down from 1.4s
Cart conversion: +9%; Mobile, 30-day window
CLS: 0.05; down from 0.34

The problem

What was broken before.

Stable Magento 2.4 store with strong organic traffic but conversion stuck below market on mobile. Lighthouse Performance score 41. Three years of layered third-party modules had accumulated unused CSS and render-blocking JavaScript. Migration to Hyvä was not on the roadmap. Time-to-first-byte averaging 1.4 seconds.

What we did

The solution.

Six-week audit and cleanup. Removed two abandoned third-party modules (saved 180KB of JavaScript). Tuned Redis Full Page Cache TTLs by content type. Replaced the image pipeline with WebP-first delivery and intrinsic-size attributes. Deferred all analytics scripts to post-paint. Inlined critical CSS for the catalog and product templates. No theme migration, no schema changes.

The outcome

What changed.

Lighthouse mobile from 41 to 78. Time to First Byte 1.4 seconds down to 380 milliseconds. Cumulative Layout Shift 0.34 down to 0.05. Mobile checkout conversion up 9 percent measured against the prior 30 days. Zero visible content or layout changes for customers.