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.

Charts Compare Measurement runs Embed a score Open to Work

chromobase.huma-num.fr

https://chromobase.huma-num.fr/

64PERF 95A11Y 100BEST 91SEO ✗AXE –CWV

Ranks Overall #1,460 Astro Showcase #148

Data from Oct 2, 2026, 6:47 AM UTC old Measured once a month · 1 run since Oct 2, 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

Astro Built with Astro
Self-hosted · nginx Hosted by Self-hosted

Lighthouse Scores LAB Simulated

64
Performance
no change
95
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 15.59 s poor — 15.59 s – 15.59 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 – 0
TBT Total Blocking Time 23 ms good — 23 ms – 23 ms
FCP First Contentful Paint 3.95 s poor — 3.95 s – 3.95 s
Speed Index 5.09 s needs work — 5.09 s – 5.09 s
TTFB Time to First Byte 691 ms good — 691 ms – 691 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 2.17 s
time to first byte 182 ms

Page weight

Metric Value Change / range Trend
Page Weight 5.73 MB — 5.73 MB – 5.73 MB
Requests 23 — 23 – 23
Third-party Weight 0 B — 0 B – 0 B
Third-party CPU 0 ms — 0 ms – 0 ms
Unused JS 198 kB — 198 kB – 198 kB
Unused CSS 74.4 kB — 74.4 kB – 74.4 kB

By resource type

Type Transfer Share Size Requests
image 91.7% 5.25 MB 13
script 4.4% 250 kB 3
font 1.7% 100 kB 4
stylesheet 1.7% 99.3 kB 2
document 0.5% 28.1 kB 1
Total 5.73 MB 23

Page health

Metric Value Change / range Trend
Main Thread Work 638 ms — 638 ms – 638 ms
Long Tasks 1 — 1 – 1
DOM Elements 1,915 — 1,915 – 1,915
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 9 — 9 – 9
A11y Failures 1 — 1 – 1
A11y Failing Nodes 4 — 4 – 4

Main thread work

Task Time Share Duration Simulated
other 52% 329 ms
style layout 29% 184 ms
script evaluation 10% 64 ms
parse HTML 5% 31 ms
paint composite render 5% 30 ms
script parse compile 0% 1 ms
Total 638 ms

Axe violations axe-core 4.13.0, full rule set

9 violating nodes across 5 rules, 1227 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • serious link-name — Links must have discernible text 4 nodes
    Offending elements
    1. .content-container-home > article[data-author="Anne-Valérie Dulac"][data-date="1884"][data-category="pedagogy"] > .read 
      <a class="read" href="/narratives/the-dramatic-colours-of-trade-cards"><p>Read</p><span></span></a>
    2. .content-container-home > article[data-author="Joy Cador"][data-date="1868"] > .read 
      <a class="read" href="/narratives/the-chromatic-world-of-alma-tadema-an-overview-of-his-library"><p>Read</p><span></span></a>
    3. .content-container-home > article[data-title="Joanna Mary Boyce’s paintboxes"][data-card-id="joanna-mary-boyce’s-paintboxes"][data-date="1850"] > .read 
      <a class="read" href="/narratives/joanna-mary-boyce’s-paintboxes"><p>Read</p><span></span></a>
    4. #color-wheel > a[href$="colour-wheel"] 
      <a href="/colour-wheel">
  • serious nested-interactive — Interactive controls must not be nested 2 nodes
    Offending elements
    1. #home-baseline > .see-more 
      <button class="see-more"><a href="/about">About</a></button>
    2. #home-wheel > .content-container-home > .see-more 
      <button class="see-more"><a href="/colour-wheel"> Explore colour wheel </a></button>
  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
    Offending element
    1. #menu 
      <nav id="menu">
  • moderate region — All page content should be contained by landmarks 1 node
    Offending element
    1. #header 
      <div id="header"> <div id="logo"><a href="/"><h1>Chromobase</h1></a></div> <label for="toggle-menu" id="button-menu"><div><span></span></div></label> </div>
  • serious scrollable-region-focusable — Scrollable region must have keyboard access 1 node
    Offending element
    1. #timeline 
      <div id="timeline" data-nbr-year="37" style="--years: 37; --h-title: 10px; --size-elem: 15px">

Accessibility failures 1 of 20 audits

  • link-name — Links do not have a discernible name 4 nodes

SEO failures 1 of 8 audits

  • meta-description — Document does not have a meta description

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache http/1.1

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 2, 2026, 6:47 AM UTC 64 15.59 s 0 23 ms 5.73 MB 3/3 ±31 2,424 -2% 32.9s Wayback