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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eleventy-react.netlify.app

https://eleventy-react.netlify.app/

99PERF 100A11Y 100BEST 100SEO !AXE –CWV

Ranks Overall #626 Build Awesome Starters #71

Data from Oct 3, 2026, 1:06 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

Eleventy Built with Eleventy
Netlify Hosted by Netlify

Lighthouse Scores LAB Simulated

99
Performance
↑ +1 (+1%)
100
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 2.25 s good ↓ -51 ms (-2.2%) 2.25 s – 2.31 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 ↓ -0.020 (-100%) significant 0 – 0.020
TBT Total Blocking Time 0 ms good → no change 0 ms – 0 ms
FCP First Contentful Paint 767 ms good ↓ -51 ms (-6.2%) significant 767 ms – 818 ms
Speed Index 767 ms good ↓ -51 ms (-6.2%) significant 767 ms – 818 ms
TTFB Time to First Byte 603 ms good ↓ -26 ms (-4.1%) 603 ms – 629 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 33 ms
resource load delay 8 ms
time to first byte 5 ms
resource load duration 4 ms

Page weight

Metric Value Change / range Trend
Page Weight 140 kB ↓ -53 B 140 kB – 140 kB
Requests 5 → no change 5 – 5
Third-party Weight 135 kB ↓ -48 B 135 kB – 135 kB
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
image 96.5% 135 kB 2
document 2.4% 3.3 kB 1
other 1.1% 1.5 kB 2
Total 140 kB 5

Third parties 1 entities

Entity Transfer Size Main thread Simulated
cloudfront.net image 135 kB 0 ms
Total 135 kB 0 ms

Without JavaScript

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

Scripts disabled
As rendered

7.8% 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 162 ms ↓ -4 ms (-2.2%) 149 ms – 166 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 41 → no change 41 – 41
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 3 → no change 3 – 3
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

Task Time Share Duration Simulated
other 47% 77 ms
style layout 39% 64 ms
script evaluation 6% 10 ms
parse HTML 3% 6 ms
paint composite render 3% 5 ms
script parse compile 1% 1 ms
Total 162 ms

Axe violations axe-core 4.13.0, full rule set

3 violating nodes across 3 rules, 86 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

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 3, 2026, 1:06 PM UTC 99 2.25 s 0 0 ms 140 kB 3/3 ±0 2,463 -1% 21.5s Wayback
Sep 26, 2026, 3:50 AM UTC 98 2.31 s 0.020 0 ms 140 kB 3/3 ±0 2,455 -1% 21.8s Wayback
Sep 19, 2026, 3:19 AM UTC 99 2.26 s 0.019 0 ms 140 kB 3/3 ±1 2,492 0% 22s Wayback
Sep 12, 2026, 1:03 AM UTC 99 2.27 s 0.019 0 ms 140 kB 3/3 ±1 2,287 -8% 21s Wayback
Sep 4, 2026, 11:46 PM UTC 99 2.26 s 0.019 0 ms 140 kB 3/3 ±0 2,440 -2% 20.3s Wayback
Aug 28, 2026, 11:25 PM UTC 99 2.27 s 0.019 0 ms 140 kB 3/3 ±1 2,305 -7% 20.7s Wayback
Aug 20, 2026, 9:30 PM UTC 99 2.26 s 0.019 0 ms 140 kB 3/3 ±1 2,468 -1% 20.2s Wayback

Embed this score

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