speedlify2

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

Charts Compare Measurement runs Embed a score

async-alpine.dev

https://async-alpine.dev/

100 100 100 100 !AXE –CWV

Ranks Overall #509 Built Awesome #417

Data from Sep 4, 2026, 5:41 AM UTC old Measured once a week · 3 runs since Aug 20, 2026

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

Stack

Eleventy 2.0.1 Built with Eleventy 2.0.1
Netlify Hosted by Netlify

Lighthouse Scores

100
Performance
no change
100
Accessibility
no change
100
Best Practices
no change
100
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 1.24 s good ↑ +16 ms (+1.3%) 1.23 s – 1.25 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 942 ms good ↑ +16 ms (+1.7%) 926 ms – 946 ms
Speed Index 942 ms good ↑ +16 ms (+1.7%) 926 ms – 946 ms
TTFB Time to First Byte 630 ms good ↑ +25 ms (+4.1%) 605 ms – 633 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 86 ms
time to first byte 32 ms

Page weight

Metric Value Change / range Trend
Page Weight 147 kB ↑ +7.5 kB (+5.5%) 132 kB – 147 kB
Requests 9 → no change 9 – 9
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

  • image 45.2% 66.0 kB · 3 req
  • font 34.1% 49.7 kB · 1 req
  • script 12.6% 18.4 kB · 1 req
  • document 7.7% 11.2 kB · 1 req
  • other 0.4% 558 B · 1 req

Without JavaScript

The same load, photographed twice at 412×823: once with scripts disabled, once as rendered.

Scripts disabled
As rendered

0.9% of pixels differ — they are nearly identical. A shifted layout counts as difference, so a <noscript> banner alone can account for a large figure.

Page health

Metric Value Change / range Trend
Main Thread Work 141 ms ↓ -50 ms (-26.2%) 141 ms – 191 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 118 → no change 118 – 118
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 1 → no change 1 – 1
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

other 78 ms
style layout 33 ms
script evaluation 15 ms
paint composite render 7 ms
parse HTML 7 ms
script parse compile 1 ms

Axe violations axe-core 4.13.0, full rule set

1 violating node across 1 rule, 261 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

  • moderate landmark-unique — Landmarks should have a unique role or role/label/title (i.e. accessible name) combination 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
Sep 4, 2026, 5:41 AM UTC 100 1.24 s 0 0 ms 147 kB 3/3 ±22 3,321 +34% 22.1s Wayback
Aug 28, 2026, 1:17 AM UTC 100 1.23 s 0 0 ms 139 kB 3/3 ±0 2,468 -1% 22.4s Wayback
Aug 20, 2026, 4:31 PM UTC 100 1.25 s 0 0 ms 132 kB 3/3 ±0 2,497 +1% 49.9s Wayback

Embed this score

Use this web component to show async-alpine.dev'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://async-alpine.dev/"></speedlify2-score>