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

designcember.web.app

https://designcember.web.app/

80PERF 88A11Y 100BEST 100SEO ✗AXE –CWV

Ranks Overall #1,500 Astro Showcase #160

Data from Oct 2, 2026, 6:51 AM UTC old Measured once a month · 1 run since Oct 2, 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

Astro Built with Astro

Lighthouse Scores LAB Simulated

80
Performance
no change
88
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 4.43 s poor — 4.43 s – 4.43 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 — 0 – 0
TBT Total Blocking Time 201 ms needs work — 201 ms – 201 ms
FCP First Contentful Paint 1.95 s needs work — 1.95 s – 1.95 s
Speed Index 1.95 s good — 1.95 s – 1.95 s
TTFB Time to First Byte 682 ms good — 682 ms – 682 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.

resource load duration 275 ms
resource load delay 144 ms
element render delay 97 ms
time to first byte 4 ms

Page weight

Metric Value Change / range Trend
Page Weight 4.30 MB — 4.30 MB – 4.30 MB
Requests 152 — 152 – 152
Third-party Weight 173 kB — 173 kB – 173 kB
Third-party CPU 79 ms — 79 ms – 79 ms
Unused JS 74.7 kB — 74.7 kB – 74.7 kB
Unused CSS 0 B — 0 B – 0 B

By resource type

Type Transfer Share Size Requests
image 95.2% 4.10 MB 143
script 4.1% 174 kB 4
stylesheet 0.4% 17.2 kB 2
document 0.3% 11.9 kB 1
other 0.1% 2.8 kB 2
Total 4.30 MB 152

Third parties 2 entities

Entity Transfer Size Main thread Simulated
Google Tag Manager script 171 kB 79 ms
Unpkg 2.7 kB 0 ms
Total 173 kB 79 ms

Page health

Metric Value Change / range Trend
Main Thread Work 1.73 s — 1.73 s – 1.73 s
Long Tasks 4 — 4 – 4
DOM Elements 990 — 990 – 990
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 13 — 13 – 13
A11y Failures 3 — 3 – 3
A11y Failing Nodes 11 — 11 – 11

Main thread work

Task Time Share Duration Simulated
other 56% 967 ms
script evaluation 16% 284 ms
style layout 13% 224 ms
paint composite render 7% 117 ms
parse HTML 4% 74 ms
script parse compile 4% 65 ms
Total 1.73 s

Axe violations axe-core 4.13.0, full rule set

13 violating nodes across 5 rules, 2343 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 9 nodes
    Offending elements (5 of 9)
    1. p:nth-child(7) > .astro-9BJS2uhJ 
      <a href="https://web.dev/authors/rachelandrew/" class="astro-9BJS2uhJ">Rachel Andrew</a>
    2. a[href$="surma/"] 
      <a href="https://web.dev/authors/surma/" class="astro-9BJS2uhJ">Surma</a>
    3. a[href$="twerske"] 
      <a href="https://twitter.com/twerske" class="astro-9BJS2uhJ">Emma Twersky</a>
    4. p:nth-child(10) > .astro-9BJS2uhJ 
      <a href="https://twitter.com/KevinLozandier" class="astro-9BJS2uhJ">Kevin Lozandier</a>
    5. p:nth-child(11) > .astro-9BJS2uhJ 
      <a href="https://web.dev/authors/jakearchibald/" class="astro-9BJS2uhJ">Jake Archibald</a>
  • critical aria-valid-attr-value — ARIA attributes must conform to valid values 1 node
    Offending element
    1. #theme-toggle 
      <button class="theme-toggle ga-event astro-OjKvQwi0" id="theme-toggle" title="Toggles light & dark" aria-live="light" data-ga-label="theme-toggle">
  • moderate landmark-one-main — Document should have one main landmark 1 node
    Offending element
    1. html 
      <html lang="en" data-theme="light">
  • moderate page-has-heading-one — Page should contain a level-one heading 1 node
    Offending element
    1. html 
      <html lang="en" data-theme="light">
  • moderate region — All page content should be contained by landmarks 1 node
    Offending element
    1. .calendar 
      <div class="calendar astro-0hXqrWm2">

Accessibility failures 3 of 24 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 9 nodes
  • aria-valid-attr-value — `[aria-*]` attributes do not have valid values 1 node
  • 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 2, 2026, 6:51 AM UTC 80 4.43 s 0 201 ms 4.30 MB 3/3 ±10 2,458 -1% 34.7s Wayback