24 stores tested

Median performance
70
Median LCP
3.1s
Median INP
277ms
Median CLS
0.10
Median JS
600kb
Median page weight
2.27mb
Median third parties
14
Over 2.5s LCP
67% of the board
Cohort
August 2026
Last tested
6h ago
Source
PageSpeed Insights API
Insights

What we learn measuring Swedish stores

Plain notes from the work — what actually makes a storefront slow, what a score is worth, and what we remove from stores we take over. Opinions where we have them, measurements where we can take them.

Free Lighthouse audit · no signup · every run gives us something to write about

24 stores tracked · median perf 70

Article24 stores · Largest Contentful Paint

67% of the stores we tested fail LCP.

Third-party scripts, almost every time.

We ran the first stores through the speed test and read Lighthouse’s third-party summary on every one. Third-party scripts account for 61% of median render delay — and the worst offenders are the ones merchants pay the most for. We are not comparing themes yet; that needs a detector we have not built.

Sleeken14 minDataset ↓

stores tested
24stores tested
fail the LCP threshold
67%fail the LCP threshold
of delay from third parties
61%of delay from third parties
median JavaScript shipped
600kbmedian JavaScript shipped

Latest across the desk

24 stores measured this round

Benchmark6h

Swedish E-commerce — August 2026

Every store, every column, sortable. Lighthouse names each third party and what it costs — the same handful keep appearing.

  1. 01Article · CostYour app bill is a code decision, not a subscriptionSEK 3 000 a month is SEK 108 000 over three years — mostly features OS 2.0 already gives you, if someone builds them.
  2. 02Article · Accessibility91% of the stores we tested fail on focus orderThe one accessibility number that moves without a redesign — Lighthouse flags it on nearly every storefront we run.
  3. 03Guide · PerformanceAuditing a theme you did not buildReading somebody else’s Liquid in an afternoon without breaking the store.

Free speed test

Every store we test gets its numbers published.

Run the test and the result becomes a row in the next benchmark: scores, Core Web Vitals, page weight and the third parties Lighthouse found. A profile page per store comes once we have storage and a scheduled job.

  • Free · no signup
  • Feeds the next benchmark
  • Re-run weekly

Recently tested

Live

StorePerfLCP3rd-p
Lundqvist Bageri822.2s9
Hejgrön812.3s12
Vinterhem782.6s13
Nordvik Denim762.7s12
Fjällkant742.8s15

The flywheel

The tools already on the site are the input. Insights is the output.

Speed testA real Lighthouse audit, plus the stackTheme, apps, custom code or hosting — it says which one owns the fix.Feeds: benchmarks, articlesApp tax calculatorSEK 3 000/mo is SEK 108 000 over three yearsWe typically replace ~65% of it with native OS 2.0 features you own.Feeds: cost articles, guidesRevenue leak+0.6pp conversion, modelled on your numbersWhat a speed and CRO pass is worth per month, in SEK, before we quote.Feeds: case studies

Fastest mobile

  1. Norrgård1.2s
  2. Alva Studio1.4s
  3. Ljus & Lera1.5s

Lowest JS

  1. Bruksbo218kb
  2. Norrgård241kb
  3. Vävstuga263kb

Most third parties

  1. Bergslagen Sport34
  2. Trädgårdsbolaget31
  3. Fjäderlätt27

Best accessibility

  1. Ljus & Lera98
  2. Alva Studio96
  3. Ateljé Nord95

Method: Lighthouse 12, Moto G Power emulation, 4G throttle, cold cache, three runs, median taken. Homepage and one product page. One cohort a month, tested on the first Monday and frozen once published.

One dispatch a month, only when the data says something

No drip sequence, no webinar invitations.

Want the fixes, not just the reading?

Fixed-scope, quoted before we start. Every article here ends up as work on someone’s storefront.

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