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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lilypond-in-markdown.netlify.app

https://lilypond-in-markdown.netlify.app/

94PERF 93A11Y 100BEST 80SEO ✗AXE –CWV

Ranks Overall #1,415 Built Awesome #960

Data from Oct 6, 2026, 12:53 PM UTC old Measured once a week · 8 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

Netlify Hosted by Netlify

Lighthouse Scores LAB Simulated

94
Performance
no change
93
Accessibility
no change
100
Best Practices
no change
80
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 2.47 s good ↑ +26 ms (+1.1%) 1.73 s – 2.47 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 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 2.47 s needs work ↑ +26 ms (+1.1%) 1.73 s – 2.47 s
Speed Index 2.47 s good ↑ +26 ms (+1.1%) 1.73 s – 2.47 s
TTFB Time to First Byte 623 ms good ↑ +3 ms (+0.5%) 603 ms – 635 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 114 ms
time to first byte 25 ms

Page weight

Metric Value Change / range Trend
Page Weight 61.9 kB ↑ +236 B (+0.4%) 46.4 kB – 61.9 kB
Requests 8 → no change 7 – 8
Third-party Weight 14.8 kB ↑ +110 B (+0.7%) 14.7 kB – 14.8 kB
Third-party CPU 7 ms ↑ +1 ms (+13.6%) 4 ms – 7 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 66.8% 31.2 kB 1
font 24.9% 11.6 kB 1
script 4% 1.9 kB 1
stylesheet 3.3% 1.5 kB 3
image 0.9% 435 B 1
Total 61.9 kB 8

Third parties 2 entities

Entity Transfer Size Main thread Simulated
Google Fonts font 12.5 kB 0 ms
Fathom Analytics script 2.3 kB 7 ms
Total 14.8 kB 7 ms

Page health

Metric Value Change / range Trend
Main Thread Work 436 ms ↑ +1 ms (+0.1%) 338 ms – 438 ms
Long Tasks 1 → no change 1 – 1
DOM Elements 3,196 → no change 3,196 – 3,196
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 59 → no change 52 – 59
A11y Failures 1 → no change 1 – 1
A11y Failing Nodes 49 → no change 49 – 49

Main thread work

Task Time Share Duration Simulated
style layout 42% 183 ms
other 27% 118 ms
paint composite render 12% 54 ms
parse HTML 9% 39 ms
script evaluation 9% 39 ms
script parse compile 1% 2 ms
Total 436 ms

Axe violations axe-core 4.13.0, full rule set

59 violating nodes across 3 rules, 4410 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 49 nodes
    Offending elements (5 of 49)
    1. pre:nth-child(3) > code > mark:nth-child(1) > .comment.token
      <span class="token comment">% lilypond 'inline', 'preview', '0.7 in' %}</span>
    2. mark:nth-child(15) > .comment.token
      <span class="token comment">% endlilypond %}</span>
    3. pre:nth-child(9) > code > mark > .comment.token
      <span class="token comment">% lilypond 'inline', 'full', '2.3 in' %}</span>
    4. .highlight-line:nth-child(20) > .comment.token
      <span class="token comment">% endlilypond %}</span>
    5. .highlight-line:nth-child(21) > .comment.token
      <span class="token comment">% Start polyphonic section of four voices</span>
  • serious scrollable-region-focusable — Scrollable region must have keyboard access 9 nodes
    Offending elements (5 of 9)
    1. pre:nth-child(3)
      <pre class="language-ly">
    2. main > .language-text
      <pre class="language-text">
    3. pre:nth-child(9)
      <pre class="language-ly">
    4. pre:nth-child(16)
      <pre class="language-ly">
    5. pre:nth-child(19)
      <pre class="language-ly">
  • moderate region — All page content should be contained by landmarks 1 node
    Offending element
    1. .github
      <div class="github">

Accessibility failures 1 of 15 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 49 nodes

SEO failures 2 of 7 audits

  • meta-description — Document does not have a meta description
  • link-text — Links do not have descriptive text 1 item

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 6, 2026, 12:53 PM UTC 94 2.47 s 0 0 ms 61.9 kB 3/3 ±1 2,451 -1% 33.1s Wayback
Sep 29, 2026, 11:12 AM UTC 94 2.45 s 0 0 ms 61.7 kB 3/3 ±0 2,388 -4% 29.8s Wayback
Sep 22, 2026, 9:06 AM UTC 94 2.44 s 0 0 ms 46.6 kB 3/3 ±1 2,471 -1% 29.6s Wayback
Sep 15, 2026, 5:55 AM UTC 94 2.44 s 0 0 ms 46.6 kB 3/3 ±1 2,303 -7% 29.2s Wayback
Sep 8, 2026, 5:39 AM UTC 99 1.73 s 0 0 ms 46.6 kB 3/3 ±0 3,397 +37% 27.8s Wayback
Sep 1, 2026, 1:43 AM UTC 94 2.47 s 0 0 ms 46.5 kB 3/3 ±1 2,469 -1% 31.6s Wayback
Aug 29, 2026, 7:46 PM UTC TRACING_ALREADY_STARTED: An internal Chrome error occurred. Please restart Chrome and try re-running Lighthouse. 25.6s
Aug 21, 2026, 1:26 AM UTC 94 2.46 s 0 0 ms 46.4 kB 3/3 ±1 2,503 +1% 30.2s Wayback

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<speedlify2-score speedlify-url="https://www.speedlify.dev/" url="https://lilypond-in-markdown.netlify.app/"></speedlify2-score>