speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time.

Charts Measurement runs Embed a score

lilypond-in-markdown.netlify.app

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

99 93 100 80 AXE CWV

Ranks Overall #1,236 Built Awesome #950

Data from Sep 8, 2026, 5:39 AM UTC old Measured once a week · 4 runs since Aug 21, 2026

Elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis · Wayback Machine

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 3,397, 37% faster than this project's median of 2,481. CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

Stack

Netlify Hosted by Netlify

Lighthouse Scores

99
Performance
↑ +5 (+5.3%)
93
Accessibility
no change
100
Best Practices
no change
80
SEO
no change

Metrics Lighthouse, mobile

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 Lighthouse
Value Change / range Trend
LCP CWV (estimate) Largest Contentful Paint 1.73 s good ↓ -735 ms (-29.8%) significant 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 1.73 s good ↓ -735 ms (-29.8%) significant 1.73 s – 2.47 s
Speed Index 1.73 s good ↓ -735 ms (-29.8%) significant 1.73 s – 2.47 s
TTFB Time to First Byte 635 ms good ↑ +31 ms (+5.1%) significant 603 ms – 635 ms

LCP Subparts lab observed, unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab LCP shown above is throttled.

element render delay 87 ms
time to first byte 37 ms

Page weight

Metric Value Change / range Trend
Page Weight 46.6 kB ↑ +73 B (+0.2%) 46.4 kB – 46.6 kB
Requests 7 → no change 7 – 7
Third-party Weight 14.7 kB ↑ +2 B 14.7 kB – 14.7 kB
Third-party CPU 4 ms ↓ -2 ms (-35.9%) 4 ms – 6 ms
Unused JS 0 B → no change 0 B – 0 B
Unused CSS 0 B → no change 0 B – 0 B

By resource type

  • document 67% 31.2 kB · 1 req
  • font 24.9% 11.6 kB · 1 req
  • script 4.1% 1.9 kB · 1 req
  • stylesheet 3.1% 1.4 kB · 3 req
  • image 0.9% 435 B · 1 req

Third parties 2 entities

14.7 kB transferred, 4 ms on the main thread.

Google Fonts font 12.4 kB · 0 ms CPU
Fathom Analytics script 2.3 kB · 4 ms CPU

Page health

Metric Value Change / range Trend
Main Thread Work 338 ms ↓ -72 ms (-17.6%) 338 ms – 410 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

style layout 123 ms
other 112 ms
paint composite render 39 ms
parse HTML 29 ms
script evaluation 27 ms
garbage collection 6 ms
script parse compile 2 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
  • serious scrollable-region-focusable — Scrollable region must have keyboard access 9 nodes
  • moderate region — All page content should be contained by landmarks 1 node

Accessibility failures 1 of 15 audits

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

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
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

Embed this score

Use this web component to show lilypond-in-markdown.netlify.app'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://lilypond-in-markdown.netlify.app/"></speedlify2-score>