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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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jules.poulain.dev

https://jules.poulain.dev/

76PERF 89A11Y 100BEST 100SEO ✗AXE –CWV

Ranks Overall #1,514 Built Awesome #1,005

Data from Oct 3, 2026, 11:39 PM 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 2.0.1 Built with Eleventy 2.0.1
Bu Hosted by Bunny CDN

Lighthouse Scores LAB Simulated

76
Performance
↓ -3 (-3.8%)
89
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 4.82 s poor ↑ +149 ms (+3.2%) 2.61 s – 4.82 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 ↓ -0.067 (-100%) significant 0 – 0.067
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 2.72 s needs work ↑ +275 ms (+11.3%) significant 2.44 s – 2.72 s
Speed Index 4.37 s needs work ↑ +1928 ms (+79%) significant 2.44 s – 4.37 s
TTFB Time to First Byte 770 ms good ↑ +149 ms (+24%) significant 612 ms – 770 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 2.18 s
time to first byte 164 ms

Page weight

Metric Value Change / range Trend
Page Weight 599 kB ↑ +42 B 598 kB – 599 kB
Requests 16 → no change 16 – 16
Third-party Weight 36.3 kB → no change 36.3 kB – 36.3 kB
Third-party CPU 0 ms → no change 0 ms – 0 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
image 92.8% 555 kB 12
font 5.9% 35.5 kB 1
document 0.7% 4.0 kB 1
stylesheet 0.6% 3.6 kB 2
Total 599 kB 16

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Google Fonts font 36.3 kB 0 ms
Total 36.3 kB 0 ms

Page health

Metric Value Change / range Trend
Main Thread Work 186 ms ↓ -565 ms (-75.3%) significant 186 ms – 750 ms
Long Tasks 0 ↓ -1 (-100%) significant 0 – 1
DOM Elements 191 → no change 191 – 191
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 10 → no change 10 – 10
A11y Failures 2 → no change 2 – 2
A11y Failing Nodes 2 → no change 2 – 2

Main thread work

Task Time Share Duration Simulated
other 61% 113 ms
style layout 24% 45 ms
script evaluation 6% 10 ms
paint composite render 5% 9 ms
parse HTML 4% 8 ms
script parse compile 1% 1 ms
Total 186 ms

Axe violations axe-core 4.13.0, full rule set

10 violating nodes across 3 rules, 334 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate region — All page content should be contained by landmarks 8 nodes
    Offending elements (5 of 8)
    1. .avatar-dessin 
      <img src="/img/avatar.jpg" alt="avatar" class="avatar avatar-dessin">
    2. h1 
      <h1>Jules Poulain</h1>
    3. .contact-info 
      <p class="contact-info"> <a class="hidden-email " href="mailto:jules@poulain.dev">jules@poulain.dev</a> </p>
    4. .subtitle 
      <p class="subtitle"> Junior Tools Programmer </p>
    5. .portefolio 
      <p class="portefolio"> Portefolio: <a href="https://poulain.dev/projects">poulain.dev/projects</a> </p>
  • serious html-has-lang — <html> element must have a lang attribute 1 node
    Offending element
    1. html 
      <html>
  • moderate landmark-one-main — Document should have one main landmark 1 node
    Offending element
    1. html 
      <html>

Accessibility failures 2 of 13 audits

  • html-has-lang — `<html>` element does not have a `[lang]` attribute 1 node
  • landmark-one-main — Document does not have a main landmark. 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
Oct 3, 2026, 11:39 PM UTC 76 4.82 s 0 0 ms 599 kB 3/3 ±14 3,000 +21% 28.5s Wayback
Sep 26, 2026, 10:01 PM UTC 79 4.67 s 0.067 0 ms 598 kB 3/3 ±10 2,491 0% 24s Wayback
Sep 19, 2026, 7:17 PM UTC 93 2.61 s 0.065 0 ms 598 kB 3/3 ±5 2,924 +18% 23.3s Wayback
Sep 12, 2026, 6:15 PM UTC 79 4.67 s 0.067 0 ms 598 kB 3/3 ±10 2,476 0% 24.1s Wayback
Sep 5, 2026, 5:57 PM UTC 77 4.78 s 0 0 ms 599 kB 3/3 ±6 2,288 -8% 28.8s Wayback
Aug 29, 2026, 4:59 PM UTC 93 2.61 s 0.065 0 ms 599 kB 3/3 ±5 2,654 +7% 24.5s Wayback
Aug 21, 2026, 3:02 AM UTC 79 4.67 s 0.064 0 ms 598 kB 3/3 ±5 2,321 -7% 23.8s Wayback

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