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.

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sixtysix.frontendweekly.tokyo

https://sixtysix.frontendweekly.tokyo/

100PERF 98A11Y 100BEST 100SEO !AXE –CWV

Ranks Overall #640 Built Awesome #481

Data from Oct 4, 2026, 7:19 PM UTC old Measured once a week · 7 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

Eleventy Built with Eleventy
Netlify Hosted by Netlify

Lighthouse Scores LAB Simulated

100
Performance
no change
98
Accessibility
no change
100
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 858 ms good ↑ +11 ms (+1.3%) 826 ms – 858 ms
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 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 858 ms good ↑ +11 ms (+1.3%) 826 ms – 858 ms
Speed Index 858 ms good ↑ +11 ms (+1.3%) 826 ms – 858 ms
TTFB Time to First Byte 628 ms good ↑ +24 ms (+4%) 604 ms – 630 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 63 ms
time to first byte 30 ms

Page weight

Metric Value Change / range Trend
Page Weight 9.7 kB ↑ +4 B 9.6 kB – 9.7 kB
Requests 2 → no change 2 – 2
Third-party Weight 0 B → no change 0 B – 0 B
Third-party CPU 0 ms → no change 0 ms – 0 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
document 100% 9.7 kB 1
Total 9.7 kB 2

Page health

Metric Value Change / range Trend
Main Thread Work 203 ms ↓ -31 ms (-13.4%) 160 ms – 234 ms
Long Tasks 1 → no change 0 – 1
DOM Elements 517 → no change 517 – 517
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
style layout 54% 110 ms
other 30% 61 ms
paint composite render 6% 13 ms
script evaluation 4% 9 ms
parse HTML 4% 9 ms
script parse compile 0% 1 ms
Total 203 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 825 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate heading-order — Heading levels should only increase by one 1 node
    Offending element
    1. li:nth-child(1) > article > h3 
      <h3><a href="/posts/kilmdz51/" class="c-post-list__link u-url">Always design a thing by considering it in its next larger context – a chair in a room, a room in a house, a house in an...</a></h3>

Accessibility failures 1 of 24 audits

  • heading-order — Heading elements are not in a sequentially-descending order 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 4, 2026, 7:19 PM UTC 100 858 ms 0 0 ms 9.7 kB 3/3 ±0 2,470 -1% 22.8s Wayback
Sep 27, 2026, 5:38 PM UTC 100 847 ms 0 0 ms 9.7 kB 3/3 ±0 2,478 0% 23.6s Wayback
Sep 20, 2026, 2:37 PM UTC 100 826 ms 0 0 ms 9.6 kB 3/3 ±0 2,931 +18% 20.8s Wayback
Sep 13, 2026, 1:52 PM UTC 100 846 ms 0 0 ms 9.6 kB 3/3 ±0 2,511 +1% 22.9s Wayback
Sep 6, 2026, 10:27 AM UTC 100 848 ms 0 0 ms 9.7 kB 3/3 ±0 2,566 +3% 22.8s Wayback
Aug 30, 2026, 8:01 AM UTC 100 845 ms 0 0 ms 9.7 kB 3/3 ±0 3,618 +46% 21.1s Wayback
Aug 21, 2026, 6:49 AM UTC 100 849 ms 0 0 ms 9.7 kB 3/3 ±0 2,488 0% 23.2s Wayback

Embed this score

Use this web component to show sixtysix.frontendweekly.tokyo'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://sixtysix.frontendweekly.tokyo/"></speedlify2-score>