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Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time. Follow us on Mastodon or Bluesky.

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kareldesmet.be

https://kareldesmet.be/

86PERF 89A11Y 100BEST 91SEO !AXE –CWV

Ranks Overall #1,058 Built Awesome #747

Data from Oct 1, 2026, 6:52 AM UTC old Measured once a week · 10 runs since Aug 21, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Tame the Bots · Scoring Calculator · Wayback Machine

Moved from https://www.kareldesmet.be/.

History from the previous URL is included below, with the move on Sep 9, 2026. A step-change around that point is likely the change of address rather than a regression.

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

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Lighthouse Scores LAB Simulated

86
Performance
↑ +7 (+8.9%)
89
Accessibility
no change
100
Best Practices
no change
91
SEO
no change

Metrics LAB

No field data: the Chrome UX Report is not being collected for this project, so every figure below is from the Lighthouse run.

Metric Lab Simulated
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 3.30 s needs work ↓ -1036 ms (-23.9%) 3.30 s – 6.51 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0.075 good → no change 0.075 – 0.182
TBT Total Blocking Time 92 ms good ↑ +76 ms (+475%) significant 16 ms – 122 ms
FCP First Contentful Paint 2.73 s needs work ↓ -44 ms (-1.6%) 2.73 s – 5.23 s
Speed Index 2.73 s good ↓ -44 ms (-1.6%) 2.73 s – 5.23 s
TTFB Time to First Byte 604 ms good ↓ -18 ms (-2.9%) 604 ms – 1.10 s

LCP Subparts LAB Unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is a simulated throttled estimate.

element render delay 43 ms
resource load duration 14 ms
resource load delay 9 ms
time to first byte 5 ms

Page weight

Metric Value Change / range Trend
Page Weight 596 kB ↓ -16.9 kB (-2.8%) 596 kB – 615 kB
Requests 14 ↓ -1 (-6.7%) significant 14 – 17
Third-party Weight 373 kB ↓ -17.2 kB (-4.5%) 373 kB – 391 kB
Third-party CPU 76 ms ↑ +27 ms (+56%) 49 ms – 97 ms
Unused JS 144 kB ↑ +2.6 kB (+1.9%) 137 kB – 144 kB
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
script 49.9% 298 kB 3
image 36.3% 217 kB 1
font 12.5% 74.5 kB 3
stylesheet 0.7% 4.2 kB 4
document 0.3% 1.9 kB 1
other 0.2% 1.3 kB 2
Total 596 kB 14

Third parties 2 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 297 kB 76 ms
Google Fonts font 76.2 kB 0 ms
Total 373 kB 76 ms

Page health

Metric Value Change / range Trend
Main Thread Work 545 ms ↑ +167 ms (+44.1%) 378 ms – 761 ms
Long Tasks 2 ↑ +1 (+100%) 1 – 5
DOM Elements 55 → no change 55 – 55
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 2 → no change 2 – 2
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 1 → no change 1 – 1

Main thread work

Task Time Share Duration Simulated
script evaluation 53% 287 ms
other 17% 95 ms
script parse compile 14% 76 ms
style layout 13% 73 ms
parse HTML 1% 7 ms
paint composite render 1% 6 ms
Total 545 ms

Axe violations axe-core 4.13.0, full rule set

2 violating nodes across 2 rules, 121 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Accessibility failures 1 of 13 audits

  • image-alt — Image elements do not have `[alt]` attributes 1 node

SEO failures 1 of 8 audits

  • image-alt — Image elements do not have `[alt]` attributes 1 item

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 1, 2026, 6:52 AM UTC 86 3.30 s 0.075 92 ms 596 kB 3/3 ±38 2,465 -1% 25.8s Wayback
Sep 24, 2026, 1:06 AM UTC 79 4.34 s 0.075 16 ms 614 kB 3/3 ±26 4,571 +84% 22.7s Wayback
Sep 17, 2026, 12:07 AM UTC 86 3.31 s 0.075 80 ms 613 kB 3/3 ±31 2,494 0% 26.2s Wayback
Sep 9, 2026, 10:57 PM UTC 86 3.31 s 0.075 75 ms 612 kB 3/3 ±37 2,492 0% 26.4s Wayback
Sep 9, 2026, 8:40 AM UTC old URL 77 4.22 s 0.075 82 ms 612 kB 3/3 ±15 2,408 -3% 25.6s Wayback
Sep 2, 2026, 8:26 AM UTC old URL 61 5.75 s 0.182 122 ms 615 kB 1/3 — 2,431 -2% 261.9s Wayback
Sep 1, 2026, 1:17 PM UTC old URL The "start lh:runner:gather" performance mark has not been set 190.3s
Sep 1, 2026, 1:50 AM UTC old URL lighthouse timed out after 120000ms 245s
Aug 30, 2026, 11:17 PM UTC old URL NO_FCP: The page did not paint any content. Please ensure you keep the browser window in the foreground during the load and try again. (NO_FCP) 87.1s
Aug 21, 2026, 10:46 AM UTC old URL 56 6.51 s 0.179 64 ms 612 kB 1/3 — 2,942 +18% 258s Wayback

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Use this web component to show kareldesmet.be's scores on any website, updated whenever this instance re-measures. Don’t forget to bundle the speedlify2-score.js component code into your site! 

<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://kareldesmet.be/"></speedlify2-score>