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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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mlcommons.org

https://mlcommons.org/

59PERF 88A11Y 96BEST 92SEO ✗AXE !CWV

Ranks Overall #1,480 Built Awesome #1,100

Data from Sep 20, 2026, 12:40 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

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

Stack

Cloudflare Hosted by Cloudflare

Lighthouse Scores LAB Simulated

59
Performance
↓ -3 (-4.8%)
88
Accessibility
no change
96
Best Practices
no change
92
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 (2026-08-22 → 2026-09-18), url-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 12.98 s poor ↓ -2049 ms (-13.6%) significant 12.98 s – 16.89 s 2.92 s needs work 68.2% 22% 9.8%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — 124 ms good site-wide 85.8% 9.6% 4.6%
CLS CWV Cumulative Layout Shift 0 good → no change 0 – 0 0 good 100% 0% 0%
TBT Total Blocking Time 436 ms needs work ↑ +130 ms (+42.5%) 100 ms – 436 ms n/a —
FCP First Contentful Paint 2.58 s needs work ↓ -50 ms (-1.9%) 2.58 s – 3.61 s 1.54 s good 81.5% 13.7% 4.8%
Speed Index 4.13 s needs work ↓ -596 ms (-12.6%) 3.51 s – 5.95 s n/a —
TTFB Time to First Byte 633 ms good ↓ -13 ms (-2%) 500 ms – 683 ms 765 ms good 76.9% 14.6% 8.5%

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 1.19 s
resource load duration 43 ms
time to first byte 19 ms
resource load delay 13 ms

LCP LAB Simulated vs LCP FIELD

Lab 12.98 s
Field p75 2.92 s

The lab LCP is 4.44× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 2.83 MB ↓ -780.0 kB (-22%) significant 2.83 MB – 4.34 MB
Requests 93 → no change 93 – 95
Third-party Weight 247 kB ↑ +595 B (+0.2%) 243 kB – 247 kB
Third-party CPU 102 ms ↑ +11 ms (+12.1%) 64 ms – 130 ms
Unused JS 98.3 kB ↑ +1.6 kB (+1.7%) 95.8 kB – 98.3 kB
Unused CSS 56.7 kB ↑ +3 B 56.7 kB – 56.7 kB

By resource type

Type Transfer Share Size Requests
image 62.3% 1.76 MB 46
script 14.5% 410 kB 22
other 14.2% 402 kB 8
document 4.5% 126 kB 2
stylesheet 2.6% 73.1 kB 6
font 2% 57.7 kB 3
Total 2.83 MB 93

Third parties 3 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 159 kB 90 ms
Google Fonts font 59.6 kB 0 ms
cloudflare.com script 28.3 kB 12 ms
Total 247 kB 102 ms

Page health

Metric Value Change / range Trend
Main Thread Work 2.44 s ↑ +34 ms (+1.4%) 1.72 s – 2.47 s
Long Tasks 8 ↓ -2 (-20%) 4 – 10
DOM Elements 776 → no change 772 – 776
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 12 → no change 12 – 12
A11y Failures 4 → no change 4 – 4
A11y Failing Nodes 10 → no change 10 – 10

Main thread work

Task Time Share Duration Simulated
other 35% 859 ms
script evaluation 31% 753 ms
style layout 17% 419 ms
script parse compile 7% 175 ms
parse HTML 6% 140 ms
paint composite render 4% 97 ms
Total 2.44 s

Axe violations axe-core 4.13.0, full rule set

12 violating nodes across 6 rules, 961 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 5 nodes
  • critical button-name — Buttons must have discernible text 3 nodes
  • moderate heading-order — Heading levels should only increase by one 1 node
  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 1 node
  • moderate region — All page content should be contained by landmarks 1 node
  • moderate skip-link — The skip-link target should exist and be focusable 1 node

Accessibility failures 4 of 30 audits

  • link-name — Links do not have a discernible name 5 nodes
  • button-name — Buttons do not have an accessible name 3 nodes
  • heading-order — Heading elements are not in a sequentially-descending order 1 node
  • skip-link — Skip links are not focusable. 1 node

Best Practices failures 1 of 19 audits

  • errors-in-console — Browser errors were logged to the console 1 item

SEO failures 1 of 10 audits

  • link-text — Links do not have descriptive text 3 items

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 1 console error

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 20, 2026, 12:40 AM UTC 59 12.98 s 0 436 ms 2.83 MB 3/3 ±20 2,453 -1% 46.2s Wayback
Sep 12, 2026, 11:45 PM UTC 62 15.03 s 0 306 ms 3.63 MB 3/3 ±23 2,462 -1% 57.4s Wayback
Sep 5, 2026, 10:38 PM UTC 66 14.71 s 0 163 ms 3.60 MB 3/3 ±7 2,910 +17% 49.4s Wayback
Sep 5, 2026, 8:05 PM UTC 65 15.68 s 0 100 ms 3.64 MB 3/3 ±1 3,408 +37% 42.6s Wayback
Aug 29, 2026, 7:43 PM UTC 60 16.01 s 0 354 ms 4.01 MB 3/3 ±0 2,455 -1% 36.5s Wayback
Aug 21, 2026, 4:44 AM UTC 59 16.89 s 0 260 ms 4.34 MB 3/3 ±6 2,469 -1% 36.3s Wayback

Embed this score

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