Marketing automation
Klaviyo website performance
Average page takes 12.1s to render its main content — 9.6s over Google's passing threshold.
Key findings
What the data says about Klaviyo sites
The handful of things that jumped out after crunching every diagnostic. Details and quick wins are below.
- 01
Average page takes 12.1s to render its main content — 9.6s over Google's passing threshold.
- 02
Layout shift averages 0.27 — visitors click the wrong things on these sites 3x more than Google considers acceptable.
- 03
Average Google PageSpeed score is 46/100 — well below the 50 passing bar.
At a glance
Average scores across 62 Klaviyo sites
Core Web Vitals
How Klaviyo sites perform in the real world
Avg. LCP
Google's Good: < 2.5s
Avg. FCP
Good: < 1.8s
Avg. CLS
Good: < 0.1
Avg. TTFB
Good: < 0.8s
Performance spread
How Klaviyo sites cluster on page speed
PageSpeed scores grouped into Google's tier labels. The shape of the distribution tells you whether the industry average hides a few great outliers — or a long tail of broken sites.
- Critical0–4965.6%
- Needs work50–6929.7%
- Decent70–894.7%
- Good90–1000.0%
Long tail: 66% of sites land in the Critical tier. This is where the easiest wins live — any site that climbs above 50 outperforms nearly half the market.
Adoption by industry
Where Klaviyo shows up most
Top industries running this stack, based on the diagnostic sample.
Quick wins
The fixes that would move most Klaviyo sites forward
Ranked by how often we saw each issue across 62 sites. If yours has these, every competitor with them fixed is beating you on something Google measures.
- 01
84 broken links
Found on 82.3% of sitesSecuritymedium impact - 02
Main content takes too long to appear
Found on 79% of sitesSpeedhigh impact - 03
1 pages share the same title
Found on 59.7% of sitesSEOmedium impact - 04
No sitemap found
Found on 33.9% of sitesSEOhigh impact - 05
Elements shift while the page loads
Found on 9.7% of sitesSpeedhigh impact
FAQ
Common questions
How we fix it
Web Boost — we fix the gaps we just showed you, every month
The diagnostic above tells you what's broken on Klaviyo websites. Web Boost is the monthly retainer that actually ships the fixes: senior developers, AI-assisted, concrete before/after reports, cancel anytime.
Speed + Core Web Vitals
Image compression, caching, lazy loading, render-blocking cleanup — the fixes the benchmark above flagged.
On-page SEO + structured data
Meta tags, canonicals, schema markup, internal linking — every signal Google's crawler expects, audited and fixed.
Conversion rate + mobile UX
CTAs, forms, microcopy, mobile layout. Turn the traffic you're already getting into leads and customers.
The diagnostic engine is the same one we ship for product and agency clients
Is Klaviyo working for your site?
Email us and we'll run a diagnostic comparing your performance to the Klaviyo sample above. No intake form, results back within a business day.
Or write to hello@borahlabs.us directly. No intake form, no pitch deck.