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.

Charts Compare Measurement runs Embed a score Open to Work

matthewthom.as

https://www.matthewthom.as/

99PERF 98A11Y 100BEST 100SEO ✗AXE –CWV

Ranks Overall #1,157 Built Awesome #794

Data from Oct 5, 2026, 6:00 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
Uses Font AwesomeFont Awesome
Bu Hosted by Bunny CDN

Lighthouse Scores LAB Simulated

99
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 928 ms good ↑ +7 ms (+0.8%) 903 ms – 928 ms
INP CWV Interaction to Next Paint — field only, no lab run can measure it n/a —
CLS CWV (estimate) Cumulative Layout Shift 0.082 good → no change 0.082 – 0.082
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 928 ms good ↑ +7 ms (+0.8%) 903 ms – 928 ms
Speed Index 928 ms good ↑ +7 ms (+0.8%) 903 ms – 928 ms
TTFB Time to First Byte 628 ms good ↑ +7 ms (+1.1%) 603 ms – 628 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 122 ms
time to first byte 18 ms

Page weight

Metric Value Change / range Trend
Page Weight 39.2 kB ↑ +13 B 39.2 kB – 39.3 kB
Requests 6 → no change 6 – 6
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 33.1% 13.0 kB 1
font 31.2% 12.3 kB 1
stylesheet 15.9% 6.3 kB 1
image 14.1% 5.5 kB 1
other 5.6% 2.2 kB 2
Total 39.2 kB 6

Page health

Metric Value Change / range Trend
Main Thread Work 256 ms ↑ +11 ms (+4.4%) 189 ms – 287 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 428 → no change 427 – 428
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 52 → no change 52 – 52
A11y Failures 2 → no change 2 – 2
A11y Failing Nodes 16 → no change 16 – 16

Main thread work

Task Time Share Duration Simulated
other 45% 116 ms
style layout 36% 91 ms
paint composite render 9% 23 ms
parse HTML 6% 15 ms
script evaluation 4% 10 ms
script parse compile 1% 1 ms
Total 256 ms

Axe violations axe-core 4.13.0, full rule set

52 violating nodes across 2 rules, 789 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate region — All page content should be contained by landmarks 51 nodes
    Offending elements (5 of 51)
    1. .banner-page > .content 
      <p class="content">
    2. #research > h2:nth-child(1) 
      <h2>Publications</h2>
    3. .papers:nth-child(2) > section > .item > h3 
      <h3> <a class="title" href="/papers/asymmetric-all-pay-auctions-with-spillovers/"> Asymmetric All-Pay Auctions with Spillovers</a> (with <a href="https://mariabetto.com" class="coauthor">Maria Betto<…
    4. .meta 
      <p class="meta"><em class="journal">Theoretical Economics</em>, <span class="year">2024</span></p>
    5. .papers:nth-child(2) > section > .item > .description 
      <p class="description">What happens when the prize in an all-pay auction depends on players’ bids? </p>
  • moderate landmark-one-main — Document should have one main landmark 1 node
    Offending element
    1. html 
      <html lang="en">

Accessibility failures 2 of 22 audits

  • label-content-name-mismatch — Elements with visible text labels do not have matching accessible names. 15 nodes
  • landmark-one-main — Document does not have a main landmark. 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 5, 2026, 6:00 PM UTC 99 928 ms 0.082 0 ms 39.2 kB 3/3 ±0 2,445 -2% 23.6s Wayback
Sep 28, 2026, 10:41 AM UTC 99 921 ms 0.082 0 ms 39.2 kB 3/3 ±1 2,438 -2% 23.3s Wayback
Sep 21, 2026, 7:43 AM UTC 99 904 ms 0.082 0 ms 39.2 kB 3/3 ±13 2,964 +19% 22.4s Wayback
Sep 14, 2026, 12:51 AM UTC 99 904 ms 0.082 0 ms 39.2 kB 3/3 ±1 2,883 +16% 22s Wayback
Sep 6, 2026, 11:35 PM UTC 99 903 ms 0.082 0 ms 39.3 kB 3/3 ±1 2,955 +19% 20.6s Wayback
Aug 30, 2026, 11:18 PM UTC 99 924 ms 0.082 0 ms 39.2 kB 3/3 ±1 2,465 -1% 23.7s Wayback
Aug 21, 2026, 12:52 PM UTC 99 925 ms 0.082 0 ms 39.2 kB 3/3 ±0 2,487 0% 23.3s Wayback

Embed this score

Use this web component to show matthewthom.as'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://www.matthewthom.as/"></speedlify2-score>