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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.

Charts Compare Measurement runs Embed a score Open to Work

scottpdawson.com

https://scottpdawson.com/

65PERF 93A11Y –BEST 40SEO –AXE –CWV

Ranks Overall #1,812 11ty Emeritus

Data from Sep 17, 2026, 4:18 PM UTC old Measured once a month · 8 runs since Sep 1, 2026

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

The most current accessibility pass was served a bot check.

This site is loaded several times per measurement, and one of those loads — the accessibility pass — was answered with Just a moment..., an automated-traffic check rather than scottpdawson.com. It was tried twice.

The performance figures below are unaffected. The screenshots, filmstrip and without-JavaScript comparison are older results from the last load that reached the site, where there was one.

This URL redirects to https://scottpdawson.substack.com/.

Lighthouse follows the redirect, so the numbers below describe the destination page, not this one. The redirect is temporary (302/303/307), so it is treated as a detour rather than a move and history stays here.

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

Stack

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Lighthouse Scores LAB Simulated

65
Performance
no change
93
Accessibility
no change
—
Best Practices
no change
40
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 2.88 s needs work ↑ +132 ms (+4.8%) 2.75 s – 6.99 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 → no change 0 – 0
TBT Total Blocking Time 2.75 s poor ↓ -217 ms (-7.3%) 2.75 s – 4.20 s
FCP First Contentful Paint 1.81 s needs work ↓ -229 ms (-11.2%) 1.81 s – 2.04 s
Speed Index 2.33 s good ↓ -697 ms (-23%) significant 2.33 s – 3.03 s
TTFB Time to First Byte 466 ms good ↓ -87 ms (-15.7%) 466 ms – 553 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 686 ms
time to first byte 284 ms

Page weight

Metric Value Change / range Trend
Page Weight 662 kB ↓ -5.7 kB (-0.9%) 662 kB – 686 kB
Requests 18 → no change 18 – 20
Third-party Weight 151 kB ↓ -1.4 kB (-0.9%) 151 kB – 159 kB
Third-party CPU 799 ms ↓ -11 ms (-1.3%) 799 ms – 1.17 s
Unused JS 0 B → no change 0 B – 20.9 kB
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
other 67.6% 444 kB 7
script 16.6% 109 kB 2
document 14.9% 97.8 kB 2
image 0.9% 6.2 kB 1
Total 662 kB 18

Third parties 2 entities

Entity Transfer Size Main thread Simulated
substack.com scriptother 123 kB 790 ms
cloudflare.com script 28.3 kB 9 ms
Total 151 kB 799 ms

Page health

Metric Value Change / range Trend
Main Thread Work 3.73 s ↓ -613 ms (-14.1%) 3.73 s – 5.05 s
Long Tasks 9 ↓ -4 (-30.8%) 8 – 13
DOM Elements 36 → no change 36 – 36
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 1 → no change 1 – 1

Main thread work

Task Time Share Duration Simulated
script evaluation 87% 3.23 s
other 7% 267 ms
style layout 4% 166 ms
garbage collection 1% 25 ms
script parse compile 1% 23 ms
paint composite render 0% 12 ms
parse HTML 0% 8 ms
Total 3.73 s

Axe violations axe-core 4.13.0, full rule set

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

Accessibility failures 1 of 20 audits

  • meta-refresh — The document uses `<meta http-equiv="refresh">` 1 node

Best Practices failures 1 of 16 audits

  • errors-in-console — Browser errors were logged to the console 6 items

SEO failures 3 of 7 audits

  • is-crawlable — Page is blocked from indexing 1 item
  • meta-description — Document does not have a meta description
  • http-status-code — Page has unsuccessful HTTP status code

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h2 6 console errors

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Sep 17, 2026, 4:18 PM UTC 65 2.88 s 0 2.75 s 662 kB 1/3 — 2,854 +15% 35.2s Wayback
Sep 10, 2026, 2:51 PM UTC 65 2.75 s 0 2.97 s 668 kB 1/3 — 2,083 -16% 44s Wayback
Sep 3, 2026, 11:57 AM UTC 45 6.99 s 0 4.20 s 686 kB 1/3 — 3,325 +34% 28.4s Wayback
Sep 2, 2026, 5:38 PM UTC ERRORED_DOCUMENT_REQUEST: Lighthouse was unable to reliably load the page you requested. Make sure you are testing the correct URL and that the server is properly responding to all requests. (Status code: 403) 25.6s
Sep 2, 2026, 8:32 AM UTC ERRORED_DOCUMENT_REQUEST: Lighthouse was unable to reliably load the page you requested. Make sure you are testing the correct URL and that the server is properly responding to all requests. (Status code: 403) 23s
Sep 1, 2026, 8:54 PM UTC ERRORED_DOCUMENT_REQUEST: Lighthouse was unable to reliably load the page you requested. Make sure you are testing the correct URL and that the server is properly responding to all requests. (Status code: 403) 25.8s
Sep 1, 2026, 1:15 PM UTC ERRORED_DOCUMENT_REQUEST: Lighthouse was unable to reliably load the page you requested. Make sure you are testing the correct URL and that the server is properly responding to all requests. (Status code: 403) 20.8s
Sep 1, 2026, 1:40 AM UTC ERRORED_DOCUMENT_REQUEST: Lighthouse was unable to reliably load the page you requested. Make sure you are testing the correct URL and that the server is properly responding to all requests. (Status code: 403) 26.3s