How many Optimizely websites did you analyze?

32 sites using Optimizely. Each one ran the full diagnostic — PageSpeed, SEO checks, SSL verification, and full tech-stack detection.

Optimizely sites in our sample average 40/100 on Google PageSpeed with an LCP of 20.5s. Performance depends more on how the site is configured than on the platform itself — we see fast and slow Optimizely sites in every industry we track.

What industries use Optimizely the most?

Optimizely is most common in furniture (2 sites in our sample). Full breakdown is in the Adoption by industry section above.

How do I know if Optimizely is right for my website?

Run the free audit on this page. You'll get your own site's performance scored against the Optimizely benchmark, so you can see whether your current stack is costing you speed or SEO rankings.

A/B Testing

Optimizely website performance

Average page takes 20.5s to render its main content — 18.0s over Google's passing threshold.

Data as of April 202632 sites analyzed

Key findings

What the data says about Optimizely sites

The handful of things that jumped out after crunching every diagnostic. Details and quick wins are below.

01
Average page takes 20.5s to render its main content — 18.0s over Google's passing threshold.
02
Average Google PageSpeed score is 40/100 — well below the 50 passing bar.

At a glance

Average scores across 32 Optimizely sites

Performance

SEO

Accessibility

Core Web Vitals

How Optimizely sites perform in the real world

Avg. LCP

20.5s

Google's Good: < 2.5s

Avg. FCP

4.5s

Good: < 1.8s

Avg. CLS

0.188

Good: < 0.1

Avg. TTFB

0.1s

Good: < 0.8s

Performance spread

How Optimizely 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.

Critical0–49
58.8%
Needs work50–69
41.2%
Decent70–89
0.0%
Good90–100
0.0%

Long tail: 59% 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 Optimizely shows up most

Top industries running this stack, based on the diagnostic sample.

Quick wins

The fixes that would move most Optimizely sites forward

Ranked by how often we saw each issue across 32 sites. If yours has these, every competitor with them fixed is beating you on something Google measures.

01
Main content takes too long to appear
Found on 25% of sitesSpeedhigh impact
02
132 broken links
Found on 25% of sitesSecuritymedium impact
03
1 pages share the same title
Found on 15.6% of sitesSEOmedium impact
04
No sitemap found
Found on 12.5% of sitesSEOhigh impact
05
Certificate expires in 30 days
Found on 3.1% of sitesSecuritymedium 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 Optimizely websites. Web Boost is the monthly retainer that actually ships the fixes: senior developers, AI-assisted, concrete before/after reports, cancel anytime.

Plans from

$497/mo

See how Web Boost works →

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 Optimizely working for your site?

Email us and we'll run a diagnostic comparing your performance to the Optimizely sample above. No intake form, results back within a business day.

Email us for a diagnosis

Or write to hello@borahlabs.us directly. No intake form, no pitch deck.