Diagnostic test suite

Simulates real shoppers across 5 devices and 4 testing angles

iPhone 15 · Safari

393×852 · Add to Cart blocked by chat widget

Critical

Pixel 8 · Chrome

412×915 · Small footer tap targets

Moderate

iPad Air · Safari

820×1180 · No issues

Good

Desktop · Chrome

1440×900 · CLS 0.19 on collections

Moderate

Desktop · Safari

1440×900 · No issues

Good

LCP · target < 2.5s

3.4s

High

INP · target < 200ms

180ms

Good

CLS · target < 0.1

0.19

Moderate

TTFB · target < 800ms

620ms

Good

Device, UX & performance issues

High

Hero image is 2.8 MB and not lazy loaded

Home page · hero banner · ≈ 7% bounce increase

Moderate

Tap targets under 44px in mobile footer

Footer menu · Android / iPhone

Moderate

Cumulative layout shift from review stars

Collection grid