Marketing optimises cost-per-click to a tenth of a cent while half the visitors leave before the page even loads. Speed is the cheapest marketing channel in existence.
Numbers every CMO should know
Every extra second of load time takes 5–10 % of conversion. Google uses Core Web Vitals as a ranking factor — a slow site pays twice: worse positions and more expensive clicks. The threshold where a mobile user leaves is 3 seconds; the Slovak e-commerce average is a sorry 4.2.
Where the speed goes
The three most common causes from our audits: unoptimised images (60 % of cases), marketing scripts — heatmaps, pixels, chats, of which the average e-shop runs 23 — and a slow checkout API. All three can be fixed without replacing the platform.
Start by measuring: a free PageSpeed report takes a minute, our 48-hour audit prices the revenue impact. Then decide whether a second worth €70,000 a year is a priority.