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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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michaelharley.net

https://michaelharley.net/

99PERF 96A11Y 100BEST 100SEO !AXE ✓CWV

Ranks Overall #689 Built Awesome #513

Data from Oct 6, 2026, 5:06 AM UTC old Measured once a week · 9 runs since Aug 21, 2026

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

Moved from https://mharley.dev/.

History from the previous URL is included below, with the move on Sep 7, 2026. A step-change around that point is likely the change of address rather than a regression.

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 3,515, 41% faster than this project's median of 2,486. CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

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

Stack

we Hosted by webserver

Lighthouse Scores LAB Simulated

99
Performance
↑ +2 (+2.1%)
96
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Metrics LAB FIELD

Core Web Vitals: passing 2 of 3 assessed from real Chrome users.

Field figures are the p75 across real Chrome users over a 28-day trailing window (2026-09-06 → 2026-10-03), origin-level.

Metric Lab Simulated Field
Value Change / range Trend p75 Distribution
LCP CWV Largest Contentful Paint 2.19 s good ↓ -456 ms (-17.3%) 2.15 s – 3.37 s 1.01 s good 95.9% 2.4% 1.7%
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a — — —
CLS CWV Cumulative Layout Shift 0 good → no change 0 – 0.004 0 good 100% 0% 0%
TBT Total Blocking Time 0 ms good → no change 0 ms – 18 ms n/a —
FCP First Contentful Paint 1.02 s good ↓ -26 ms (-2.5%) 962 ms – 2.35 s 1.01 s good 90.7% 4.8% 4.6%
Speed Index 1.02 s good ↓ -26 ms (-2.5%) 962 ms – 2.45 s n/a —
TTFB Time to First Byte 642 ms good ↓ -4 ms (-0.6%) 624 ms – 662 ms 562 ms good 85.7% 12.3% 1.9%

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 113 ms
time to first byte 37 ms

LCP LAB Simulated vs LCP FIELD

Lab 2.19 s
Field p75 1.01 s

The lab LCP is 2.17× the field p75 — real users likely have above-average hardware or network connectivity.

Page weight

Metric Value Change / range Trend
Page Weight 386 kB ↓ -79.1 kB (-17.3%) 255 kB – 613 kB
Requests 29 ↓ -3 (-9.4%) 29 – 35
Third-party Weight 3.2 kB → no change 3.2 kB – 613 kB
Third-party CPU 1 ms ↓ -1 ms (-40%) 1 ms – 10 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 15.9 kB ↑ +165 B (+1%) 14.1 kB – 15.9 kB

By resource type

Type Transfer Share Size Requests
image 57.5% 222 kB 11
font 26.4% 102 kB 6
stylesheet 6.5% 25.1 kB 1
other 5% 19.3 kB 3
document 3.9% 14.9 kB 1
script 0.7% 2.8 kB 1
Total 386 kB 29

Third parties 1 entities

Entity Transfer Size Main thread Simulated
Fathom Analytics script 3.2 kB 1 ms
Total 3.2 kB 1 ms

Page health

Metric Value Change / range Trend
Main Thread Work 538 ms ↓ -190 ms (-26.1%) significant 538 ms – 982 ms
Long Tasks 1 → no change 0 – 2
DOM Elements 576 → no change 342 – 717
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 1 → no change 0 – 1
A11y Failures 1 → no change 0 – 1
A11y Failing Nodes 1 → no change 0 – 1

Main thread work

Task Time Share Duration Simulated
other 44% 239 ms
style layout 35% 189 ms
paint composite render 11% 59 ms
script evaluation 4% 22 ms
parse HTML 4% 19 ms
garbage collection 1% 6 ms
script parse compile 1% 5 ms
Total 538 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 844 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Accessibility failures 1 of 25 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 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 6, 2026, 5:06 AM UTC 99 2.19 s 0 0 ms 386 kB 3/3 ±1 3,515 +41% 24s Wayback
Sep 29, 2026, 4:49 AM UTC 97 2.64 s 0 0 ms 467 kB 3/3 ±9 2,696 +8% 26.4s Wayback
Sep 22, 2026, 3:53 AM UTC 99 2.15 s 0 0 ms 367 kB 3/3 ±5 2,469 -1% 29.8s Wayback
Sep 15, 2026, 12:19 AM UTC 97 2.48 s 0 0 ms 364 kB 3/3 ±4 2,487 0% 27.5s Wayback
Sep 7, 2026, 10:31 PM UTC 98 2.38 s 0.004 0 ms 479 kB 3/3 ±2 2,652 +7% 26.2s Wayback
Sep 7, 2026, 3:02 PM UTC old URL 91 3.37 s 0.004 18 ms 613 kB 3/3 ±11 2,407 -3% 24.3s Wayback
Aug 31, 2026, 10:44 AM UTC old URL 96 2.65 s 0 12 ms 261 kB 3/3 ±2 2,345 -6% 23s Wayback
Aug 21, 2026, 4:56 PM UTC old URL 93 2.82 s 0 0 ms 255 kB 3/3 ±4 2,424 -3% 23.6s Wayback
Aug 21, 2026, 4:47 AM UTC old URL TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 19.2s

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