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

michelin.com

https://www.michelin.com/

41PERF 92A11Y 96BEST 100SEO ✗AXE !CWV

Ranks Overall #1,727 Astro Showcase #207

Data from Oct 2, 2026, 7:08 PM 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
Uses PreactPreactSvelteSvelte

Lighthouse Scores LAB Simulated

41
Performance
no change
92
Accessibility
no change
96
Best Practices
no change
100
SEO
no change

Metrics LAB FIELD

Core Web Vitals: failing 3 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-02 → 2026-09-29), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 9.01 s poor — 9.01 s – 9.01 s 3.17 s needs work 59.7% 25.8% 14.5%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 235 ms needs work 69.9% 26% 4.1%
CLS CWV Cumulative Layout Shift 0.012 good — 0.012 – 0.012 0.020 good 86.9% 5.6% 7.5%
TBT Total Blocking Time 987 ms poor — 987 ms – 987 ms n/a —
FCP First Contentful Paint 4.31 s poor — 4.31 s – 4.31 s 2.93 s needs work 40.5% 35.8% 23.8%
Speed Index 5.20 s needs work — 5.20 s – 5.20 s n/a —
TTFB Time to First Byte 834 ms needs work — 834 ms – 834 ms 1.50 s needs work 24.6% 59.8% 15.6%

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 801 ms
time to first byte 722 ms
resource load delay 213 ms
resource load duration 7 ms

LCP LAB Simulated vs LCP FIELD

Lab 9.01 s
Field p75 3.17 s

The lab LCP is 2.85× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 2.75 MB — 2.75 MB – 2.75 MB
Requests 103 — 103 – 103
Third-party Weight 1.60 MB — 1.60 MB – 1.60 MB
Third-party CPU 564 ms — 564 ms – 564 ms
Unused JS 90.1 kB — 90.1 kB – 90.1 kB
Unused CSS 90.2 kB — 90.2 kB – 90.2 kB

By resource type

Type Transfer Share Size Requests
image 39.6% 1.09 MB 9
script 17.7% 488 kB 72
other 15% 412 kB 11
font 14.8% 406 kB 4
document 9.4% 257 kB 1
stylesheet 3.6% 98.2 kB 5
Total 2.75 MB 103

Third parties 6 entities

Entity Transfer Size Main thread Simulated
cloudimg.io image 1.28 MB 101 ms
Didomi script 215 kB 52 ms
Mouseflow 55.5 kB 344 ms
Kameleoon 31.1 kB 53 ms
XiTi 27.3 kB 14 ms
All 6 1.60 MB 564 ms

Page health

Metric Value Change / range Trend
Main Thread Work 5.72 s — 5.72 s – 5.72 s
Long Tasks 12 — 12 – 12
DOM Elements 991 — 991 – 991
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 7 — 7 – 7
A11y Failures 2 — 2 – 2
A11y Failing Nodes 3 — 3 – 3

Main thread work

Task Time Share Duration Simulated
script evaluation 54% 3.09 s
other 23% 1.32 s
style layout 12% 676 ms
paint composite render 5% 304 ms
script parse compile 2% 138 ms
parse HTML 2% 121 ms
garbage collection 1% 71 ms
Total 5.72 s

Axe violations axe-core 4.13.0, full rule set

7 violating nodes across 5 rules, 667 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • critical button-name — Buttons must have discernible text 2 nodes
    Offending elements
    1. .ds__btn-nav-wrapper > .ds__btn-icon[aria-label=""][data-ui-icon-alone="true"] 
      <button data-ui-size="sm" data-ui-icon-alone="true" class="ds__btn-icon" aria-label="" type="button" aria-expanded="false">
    2. .ds__search > .ds__btn-icon[aria-label=""][data-ui-icon-alone="true"] 
      <button data-ui-size="sm" data-ui-icon-alone="true" class="ds__btn-icon" aria-label="" type="button">
  • moderate region — All page content should be contained by landmarks 2 nodes
    Offending elements
    1. .ds__layout-skip-links 
      <div class="ds__layout-skip-links">
    2. .ds__slider-viewport-navigation-wrapper 
      <div class="ds__slider-viewport-navigation-wrapper" data-ui-grid-pattern="1">
  • minor aria-allowed-role — ARIA role should be appropriate for the element 1 node
    Offending element
    1. .didomi-popup-notice-logo 
      <img class="didomi-popup-notice-logo" alt="Logo" src="https://agngnconpm.cloudimg.io/v7/https://dgaddcosprod.blob.core.windows.net/corporate-production/attachments/cltemo1960jue13j9eqlyfshy-michelin-…
  • serious aria-prohibited-attr — Elements must only use permitted ARIA attributes 1 node
    Offending element
    1. .ds__slider-pager-counter 
      <div class="ds__slider-pager-counter" aria-label="Diapositive 1 sur 4" aria-live="polite" aria-atomic="true"><div aria-hidden="true"><span>1</span><span>4</span></div></div>
  • minor empty-heading — Headings should not be empty 1 node
    Offending element
    1. .didomi-popup-notice-logo 
      <img class="didomi-popup-notice-logo" alt="Logo" src="https://agngnconpm.cloudimg.io/v7/https://dgaddcosprod.blob.core.windows.net/corporate-production/attachments/cltemo1960jue13j9eqlyfshy-michelin-…

Accessibility failures 2 of 34 audits

  • button-name — Buttons do not have an accessible name 2 nodes
  • aria-prohibited-attr — Elements use prohibited ARIA attributes 1 node

Best Practices failures 1 of 18 audits

  • charset — Charset declaration is missing or occurs too late in the HTML

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2

Measurement log

Field history 25 weeks

Weekly p75 from the CrUX History API, backfilled in a single request.

Week ending LCPINPCLSFCPTTFB
2026-09-26 3.15 s 236 ms 0.020 2.90 s 1.48 s
2026-09-19 3.03 s 229 ms 0.030 2.80 s 1.40 s
2026-09-12 2.96 s 237 ms 0.030 2.70 s 1.40 s
2026-09-05 2.95 s 237 ms 0.030 2.62 s 1.37 s
2026-08-29 3.03 s 237 ms 0.030 2.66 s 1.37 s
2026-08-22 3.08 s 245 ms 0.030 2.75 s 1.43 s
2026-08-15 3.17 s 247 ms 0.020 2.81 s 1.47 s
2026-08-08 3.21 s 247 ms 0.020 2.93 s 1.49 s
2026-08-01 3.20 s 240 ms 0.020 2.96 s 1.50 s
2026-07-25 3.22 s 234 ms 0.030 2.93 s 1.47 s
2026-07-18 3.22 s 229 ms 0.030 2.92 s 1.46 s
2026-07-11 3.48 s 225 ms 0.500 2.86 s 1.47 s

Runs

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 2, 2026, 7:08 PM UTC 41 9.01 s 0.012 987 ms 2.75 MB 3/3 ±3 2,494 0% 51.3s Wayback