speedlify2

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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lessonsofacto.com

https://lessonsofacto.com/

80PERF 96A11Y 100BEST 100SEO ✗AXE –CWV

Ranks Overall #1,357 Built Awesome #924

Data from Oct 4, 2026, 10:55 AM UTC old Measured once a week · 7 runs since Aug 21, 2026

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

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

Stack

Eleventy Built with Eleventy
Cloudflare Hosted by Cloudflare

Lighthouse Scores LAB Simulated

80
Performance
↓ -4 (-4.8%)
96
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 5.12 s poor ↑ +752 ms (+17.2%) significant 3.50 s – 5.12 s
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0 good → no change 0 – 0
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 1.73 s good ↑ +5 ms (+0.3%) 1.72 s – 1.91 s
Speed Index 1.73 s good ↑ +5 ms (+0.3%) 1.72 s – 1.91 s
TTFB Time to First Byte 616 ms good ↑ +2 ms (+0.3%) 614 ms – 710 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 116 ms
time to first byte 21 ms
resource load duration 19 ms
resource load delay 11 ms

Page weight

Metric Value Change / range Trend
Page Weight 1.74 MB ↓ -702 B 1.50 MB – 1.74 MB
Requests 66 → no change 66 – 67
Third-party Weight 39.0 kB ↓ -1 B 37.6 kB – 39.1 kB
Third-party CPU 19 ms ↓ -5 ms (-19.9%) 17 ms – 28 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
other 62.7% 1.09 MB 25
image 18.5% 322 kB 23
font 9% 157 kB 3
document 7.1% 123 kB 2
script 2.7% 46.6 kB 7
Total 1.74 MB 66

Third parties 4 entities

Entity Transfer Size Main thread Simulated
cloudflare.com script 28.3 kB 16 ms
Cloudflare script 10.2 kB 3 ms
workers.dev 496 B 0 ms
cloudflareinsights.com 36 B 0 ms
Total 39.0 kB 19 ms

Page health

Metric Value Change / range Trend
Main Thread Work 697 ms ↓ -134 ms (-16.1%) 669 ms – 1.00 s
Long Tasks 0 ↓ -1 (-100%) 0 – 2
DOM Elements 527 → no change 527 – 527
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 23 → no change 23 – 24
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 22 → no change 22 – 22

Main thread work

Task Time Share Duration Simulated
other 53% 372 ms
script evaluation 17% 122 ms
style layout 17% 120 ms
parse HTML 5% 37 ms
paint composite render 3% 21 ms
garbage collection 2% 15 ms
script parse compile 2% 11 ms
Total 697 ms

Axe violations axe-core 4.13.0, full rule set

23 violating nodes across 2 rules, 420 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 22 nodes
    Offending elements (5 of 22)
    1. .md\:text-xl 
      <span class="font-script text-lg md:text-xl xl:text-3xl text-locto-red text-trim leading-none can-hover:group-has-[a:hover]:text-locto-dark transition-colors duration-300 ease-in-out" elementtiming="…
    2. .mt-2\.5 > .md\:py-3:nth-child(2) 
      <dd class="py-2.5 md:py-3 text-trim">39:32</dd>
    3. .ml-2 
      <dd class="ml-2 pl-2 py-2.5 md:py-3 text-trim border-l-1 border-inherit">Technical</dd>
    4. .md\:py-3.ml-auto 
      <dd class="ml-auto py-2.5 md:py-3 text-trim">Mon 9th February, 2026</dd>
    5. .-ml-px.shrink.has-checked\:bg-white:nth-child(2) 
      <label class="grow shrink text-cen...">
  • moderate region — All page content should be contained by landmarks 1 node
    Offending element
    1. .lg\:col-8 
      <a href="/" class="lg:col-8"> <img src="/images/layout/logo-light-color-c7d4a45dd9132d4d39da8c9275f9cd9d.svg" width="110" height="50" alt="Lessons of a CTO" class="w-auto h-[50px] lg:w-full lg:h-auto…

Accessibility failures 1 of 24 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 22 nodes

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 4, 2026, 10:55 AM UTC 80 5.12 s 0 0 ms 1.74 MB 3/3 ±20 3,312 +33% 36.4s Wayback
Sep 27, 2026, 12:27 AM UTC 84 4.36 s 0 0 ms 1.74 MB 3/3 ±15 2,481 0% 40.2s Wayback
Sep 19, 2026, 10:19 PM UTC 85 4.21 s 0 0 ms 1.51 MB 3/3 ±4 2,492 0% 49.3s Wayback
Sep 12, 2026, 9:23 PM UTC 87 3.91 s 0 0 ms 1.52 MB 3/3 ±5 2,430 -2% 45.4s Wayback
Sep 5, 2026, 8:03 PM UTC 90 3.50 s 0 0 ms 1.52 MB 3/3 ±4 2,420 -3% 40.4s Wayback
Aug 29, 2026, 7:41 PM UTC 84 4.37 s 0 0 ms 1.50 MB 3/3 ±28 3,045 +22% 41.7s Wayback
Aug 21, 2026, 3:10 AM UTC 88 3.84 s 0 0 ms 1.62 MB 3/3 ±7 2,429 -2% 39.7s Wayback

Embed this score

Use this web component to show lessonsofacto.com'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://lessonsofacto.com/"></speedlify2-score>