Why Page Speed Still Determines Whether Visitors Convert

Every year, someone tells Brenvale Studio that page speed "doesn't matter as much anymore" because connections are faster and devices are more powerful. Every year, the data says otherwise — and the gap between fast and slow sites keeps mattering more, not less, as user expectations rise.

The numbers haven't really changed

Industry research has consistently shown that conversion rates drop sharply as load time increases past the two-second mark, and continue declining from there. Brenvale Studio has seen this directly in our own client work — our rebuild of Northline Outdoor Gear's e-commerce storefront cut load time by 61% and lifted conversion rate by 34%, with no other major changes to the site's design or offer.

Why page builders tend to work against you here

Most page-builder platforms load a significant amount of JavaScript and CSS just to render their own editing framework — code that serves no purpose once the site is live for visitors. Brenvale Studio hand-codes every build specifically to avoid this overhead, which is a large part of why our recent builds average a 98 Lighthouse performance score.

It's not just about the homepage

Brenvale Studio frequently sees clients optimize their homepage carefully while ignoring the pages that actually drive revenue — product pages, checkout flows, and contact forms. A fast homepage with a slow checkout still loses the sale. We test performance across the full user journey, not just the entry point.

Where the seconds actually go

In Brenvale Studio's experience auditing existing sites, the biggest offenders are almost always the same three things: unoptimized images, render-blocking third-party scripts (chat widgets, analytics, marketing pixels stacked without regard for load order), and page-builder framework overhead. Fixing these three areas alone typically recovers most of the available performance gain.

What this means for your next site

If you're planning a new build or a redesign, performance needs to be a stated requirement from the first conversation — not something addressed after launch when the design is already locked in. Brenvale Studio treats performance testing as part of the build process itself, not a final QA step, which is the only way it consistently holds up once real content and traffic hit the site.

Tomas Brenner

Founder & Lead Developer, Brenvale Studio