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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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austinjavascript.com

https://austinjavascript.com/

97PERF 96A11Y 77BEST 100SEO !AXE –CWV

Ranks Overall #984 Built Awesome #707

Data from Oct 2, 2026, 11:03 PM UTC old Measured once a week · 7 runs since Aug 20, 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

GitHub Pages Hosted by GitHub Pages

Lighthouse Scores LAB Simulated

97
Performance
no change
96
Accessibility
no change
77
Best Practices
no change
100
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 2.10 s good ↑ +699 ms (+49.8%) 1.40 s – 2.59 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 → no change 0 – 0
TBT Total Blocking Time 125 ms good ↓ -74 ms (-37.2%) 121 ms – 210 ms
FCP First Contentful Paint 1.59 s good ↑ +639 ms (+67%) significant 954 ms – 1.65 s
Speed Index 1.59 s good ↑ +639 ms (+67%) significant 954 ms – 1.65 s
TTFB Time to First Byte 526 ms good ↓ -128 ms (-19.6%) significant 513 ms – 654 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 39 ms
resource load duration 23 ms
time to first byte 22 ms
resource load delay 9 ms

Page weight

Metric Value Change / range Trend
Page Weight 1.02 MB ↑ +2.1 kB (+0.2%) 998 kB – 1.02 MB
Requests 137 → no change 137 – 142
Third-party Weight 194 kB ↑ +1.7 kB (+0.9%) 190 kB – 194 kB
Third-party CPU 75 ms ↓ -0 ms (-0.3%) 69 ms – 113 ms
Unused JS 0 B ↓ -70.5 kB (-100%) 0 B – 72.2 kB
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
script 46.5% 472 kB 22
image 40.9% 415 kB 102
other 5.4% 54.7 kB 5
font 3.2% 32.4 kB 1
stylesheet 2.2% 22.2 kB 5
document 1.9% 19.1 kB 2
Total 1.02 MB 137

Third parties 3 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 163 kB 39 ms
Google Analytics 20.9 kB 31 ms
Cloudflare 10.2 kB 5 ms
Total 194 kB 75 ms

Page health

Metric Value Change / range Trend
Main Thread Work 1.23 s ↓ -72 ms (-5.5%) 1.09 s – 1.48 s
Long Tasks 4 → no change 3 – 4
DOM Elements 483 → no change 483 – 483
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 1 → no change 1 – 1
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 1 → no change 1 – 1

Main thread work

Task Time Share Duration Simulated
other 40% 486 ms
script evaluation 33% 401 ms
style layout 14% 167 ms
paint composite render 8% 102 ms
script parse compile 4% 43 ms
parse HTML 1% 16 ms
garbage collection 1% 11 ms
Total 1.23 s

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 2317 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • serious frame-title — Frames must have an accessible name 1 node
    Offending element
    1. iframe 
      <iframe scrolling="no" style="width:100%!important;height:220px;border:1px #ccc solid!important" src="https://buttondown.com/austinjavascript?as_embed=true"></iframe>

Accessibility failures 1 of 24 audits

  • frame-title — `<frame>` or `<iframe>` elements do not have a title 1 node

Best Practices failures 2 of 19 audits

  • third-party-cookies — Uses third-party cookies 1 item
  • inspector-issues — Issues were logged in the `Issues` panel in Chrome Devtools 1 item

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 2, 2026, 11:03 PM UTC 97 2.10 s 0 125 ms 1.02 MB 3/3 ±33 3,026 +22% 30.2s Wayback
Sep 25, 2026, 5:54 AM UTC 97 1.40 s 0 199 ms 1.01 MB 3/3 ±37 3,201 +29% 30.9s Wayback
Sep 18, 2026, 3:23 AM UTC 97 2.09 s 0 133 ms 1.02 MB 3/3 ±34 3,218 +29% 30s Wayback
Sep 10, 2026, 11:47 PM UTC 94 2.59 s 0 162 ms 1.02 MB 3/3 ±2 2,457 -1% 31.5s Wayback
Sep 3, 2026, 10:28 PM UTC 96 2.09 s 0 166 ms 998 kB 3/3 ±4 2,321 -7% 31.9s Wayback
Aug 27, 2026, 7:05 PM UTC 98 2.08 s 0 121 ms 1.00 MB 3/3 ±34 2,903 +17% 29.5s Wayback
Aug 20, 2026, 3:46 PM UTC 95 2.12 s 0 210 ms 999 kB 3/3 ±10 2,334 -6% 30.9s Wayback

Embed this score

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