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

airleventy.netlify.app

https://airleventy.netlify.app/

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

Ranks Overall #1,301 Build Awesome Starters #143

Data from Oct 2, 2026, 10:58 PM UTC old Measured once a week · 7 runs since Aug 20, 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

100
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 953 ms good ↑ +49 ms (+5.4%) significant 764 ms – 953 ms
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 953 ms good ↑ +191 ms (+25.1%) significant 762 ms – 953 ms
Speed Index 1.61 s good ↑ +849 ms (+111.4%) significant 762 ms – 1.61 s
TTFB Time to First Byte 794 ms good ↑ +190 ms (+31.5%) significant 604 ms – 794 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.

time to first byte 653 ms
element render delay 227 ms

Page weight

Metric Value Change / range Trend
Page Weight 17.3 kB ↑ +395 B (+2.3%) 1.8 kB – 17.3 kB
Requests 5 → no change 4 – 5
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
stylesheet 50.5% 1.1 kB 1
document 35.7% 752 B 1
script 13.7% 289 B 2
Total 17.3 kB 5

Without JavaScript

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

Scripts disabled
As rendered

0% of pixels differ — they are 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 93 ms ↑ +6 ms (+6.4%) 73 ms – 93 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 20 → no change 20 – 20
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 8 → no change 8 – 8
A11y Failures 2 → no change 2 – 2
A11y Failing Nodes 2 → no change 2 – 2

Main thread work

Task Time Share Duration Simulated
other 69% 65 ms
style layout 12% 11 ms
script evaluation 11% 10 ms
parse HTML 4% 3 ms
paint composite render 2% 2 ms
script parse compile 1% 1 ms
Total 93 ms

Axe violations axe-core 4.13.0, full rule set

8 violating nodes across 3 rules, 40 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 6 nodes
    Offending elements (5 of 6)
    1. h1 
      <h1>Feel the breeze with Airleventy!</h1>
    2. p:nth-child(2) 
      <p><strong>What can you do with this static site template?</strong></p>
    3. ul:nth-child(3) 
      <ul> <li>Write CSS with Sass</li> <li>Write modern JavaScript</li> <li>Host it on Netlify!</li> </ul>
    4. p:nth-child(4) 
      <p><strong>What tools does it use?</strong></p>
    5. ul:nth-child(5) 
      <ul> <li>The standard Sass implementation for Node</li> <li>Babel transpiled JavaScript with Rollup</li> <li>11ty (eleventy) to handle the scaffolding</li> </ul>
  • serious color-contrast — Elements must meet minimum color contrast ratio thresholds 1 node
    Offending element
    1. .by 
      <p class="by">Template by <a href="https://github.com/geotrev">geotrev</a>.</p>
  • moderate landmark-one-main — Document should have one main landmark 1 node
    Offending element
    1. html 
      <html lang="en">

Accessibility failures 2 of 12 audits

  • color-contrast — Background and foreground colors do not have a sufficient contrast ratio. 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, 10:58 PM UTC 100 953 ms 0 0 ms 17.3 kB 3/3 ±0 2,464 -1% 20.5s Wayback
Sep 25, 2026, 11:20 AM UTC 100 904 ms 0 0 ms 16.9 kB 3/3 ±0 2,490 0% 21.3s Wayback
Sep 18, 2026, 8:53 AM UTC 100 779 ms 0 0 ms 1.8 kB 3/3 ±0 2,408 -3% 25s Wayback
Sep 11, 2026, 8:42 AM UTC 100 768 ms 0 0 ms 1.8 kB 3/3 ±0 2,320 -7% 20.8s Wayback
Sep 4, 2026, 5:45 AM UTC 100 786 ms 0 0 ms 1.8 kB 3/3 ±0 3,380 +36% 19.6s Wayback
Aug 28, 2026, 1:22 AM UTC 100 764 ms 0 0 ms 1.8 kB 3/3 ±0 2,479 0% 20.4s Wayback
Aug 20, 2026, 7:06 PM UTC 100 768 ms 0 0 ms 1.8 kB 3/3 ±0 2,323 -7% 21s Wayback

Embed this score

Use this web component to show airleventy.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://airleventy.netlify.app/"></speedlify2-score>