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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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kevinhealyclarke.co.uk

https://kevinhealyclarke.co.uk/

94PERF 100A11Y 100BEST 100SEO !AXE –CWV

Ranks Overall #679 Built Awesome #545

Data from Sep 20, 2026, 5:50 AM UTC old Measured once a week · 6 runs since Aug 21, 2026

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

Moved from https://kevhealy.com/.

History from the previous URL is included below, with the move on Sep 6, 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

Eleventy 3.1.0 Built with Eleventy 3.1.0
Netlify Hosted by Netlify

Lighthouse Scores LAB Simulated

94
Performance
↓ -1 (-1.1%)
100
Accessibility
no change
100
Best Practices
no change
100
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 3.15 s needs work ↑ +279 ms (+9.7%) 2.87 s – 4.89 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0.007 good → no change 0.007 – 0.039
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 1.05 s good ↑ +242 ms (+29.8%) 809 ms – 2.88 s
Speed Index 1.05 s good ↑ +242 ms (+29.8%) 809 ms – 4.80 s
TTFB Time to First Byte 605 ms good ↓ -21 ms (-3.4%) 605 ms – 830 ms

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 71 ms
time to first byte 6 ms

Page weight

Metric Value Change / range Trend
Page Weight 400 kB ↓ -179 B 400 kB – 401 kB
Requests 13 → no change 13 – 15
Third-party Weight 4.8 kB ↓ -69 B (-1.4%) 4.8 kB – 401 kB
Third-party CPU 3 ms ↑ +1 ms (+30%) significant 2 ms – 4 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
font 94.5% 378 kB 4
other 2.1% 8.4 kB 6
stylesheet 1.6% 6.4 kB 1
script 1.1% 4.4 kB 1
document 0.7% 2.8 kB 1
Total 400 kB 13

Third parties 2 entities

Entity Transfer Size Main thread Simulated
zgo.at script 4.4 kB 3 ms
goatcounter.com 382 B 0 ms
Total 4.8 kB 3 ms

Page health

Metric Value Change / range Trend
Main Thread Work 200 ms ↑ +25 ms (+14.3%) 175 ms – 399 ms
Long Tasks 0 → no change 0 – 1
DOM Elements 155 → no change 155 – 155
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 1 → no change 1 – 1
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

Task Time Share Duration Simulated
other 50% 101 ms
style layout 30% 59 ms
script evaluation 9% 18 ms
paint composite render 5% 10 ms
parse HTML 5% 10 ms
script parse compile 1% 2 ms
Total 200 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 303 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node

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
Sep 20, 2026, 5:50 AM UTC 94 3.15 s 0.007 0 ms 400 kB 3/3 ±1 2,465 -1% 20.8s Wayback
Sep 13, 2026, 3:27 AM UTC 95 2.88 s 0.007 0 ms 400 kB 3/3 ±14 2,987 +20% 22.5s Wayback
Sep 6, 2026, 12:35 AM UTC 95 2.87 s 0.007 0 ms 400 kB 3/3 ±8 2,837 +14% 25s Wayback
Sep 5, 2026, 8:01 PM UTC old URL 82 4.41 s 0.039 0 ms 401 kB 3/3 ±4 2,514 +1% 22.5s Wayback
Aug 29, 2026, 7:39 PM UTC old URL 83 3.85 s 0.008 0 ms 401 kB 1/3 — 2,489 0% 154.6s Wayback
Aug 21, 2026, 1:17 AM UTC old URL 75 4.89 s 0.007 0 ms 401 kB 1/3 — 2,479 0% 273.6s Wayback

Embed this score

Use this web component to show kevinhealyclarke.co.uk'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://kevinhealyclarke.co.uk/"></speedlify2-score>