Klaviyo - Landing Page

Top findings

1. 1The headline 'AI marketing & service to grow relationships' is too abstract — it omits Klaviyo's core channels (email, SMS) and the concrete outcome (revenue), leaving first-time visitors unsure what the product actually does.
2. 2Mobile performance is catastrophically slow: a 26/100 PageSpeed score, 18.8 s LCP, and 12,560 ms TBT mean the majority of mobile visitors will bounce before the page is interactive — this is the single biggest conversion leak on the page.
3. 3Social proof is present (logos bar: Vans, Vuori, Daily Harvest, Dollar Shave Club, and a '196,000+ relationship-driven brands across 100 countries' stat) but it sits at the very bottom of the visible hero area and is cut off on desktop, reducing its credibility impact.

Full teardown