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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atomwolf.org

https://www.atomwolf.org/

100PERF 100A11Y 100BEST 100SEO ✓AXE –CWV

Ranks Overall #158 Built Awesome #131

Data from Oct 5, 2026, 8:29 AM UTC old Measured once a week · 7 runs since Aug 21, 2026

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

The measuring machine was faster than most in this project.

Lighthouse benchmark index was 4,486, 80% faster than this project's median of 2,486. CPU-bound metrics — TBT, TTI, main thread work — are affected by this and may have moved without the site changing at all.

Lab data is measured using Lighthouse, Mobile mode unless otherwise specified. Field data is reported from Chrome UX Report (using p75 measurements).

Stack

Eleventy 3.1.2 Built with Eleventy 3.1.2
Amazon S3 Hosted by Amazon S3

Lighthouse Scores LAB Simulated

100
Performance
no change
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 811 ms good ↓ -59 ms (-6.8%) significant 811 ms – 906 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 811 ms good ↓ -59 ms (-6.8%) 793 ms – 892 ms
Speed Index 811 ms good ↓ -59 ms (-6.8%) 793 ms – 892 ms
TTFB Time to First Byte 620 ms good ↓ -49 ms (-7.3%) 604 ms – 669 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 39 ms
time to first byte 14 ms

Page weight

Metric Value Change / range Trend
Page Weight 15.6 kB ↑ +514 B (+3.4%) 15.1 kB – 16.3 kB
Requests 7 → no change 7 – 7
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
document 60.5% 9.4 kB 1
other 22.1% 3.4 kB 3
font 9.6% 1.5 kB 1
stylesheet 7.8% 1.2 kB 1
Total 15.6 kB 7

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 142 ms ↓ -26 ms (-15.5%) 137 ms – 237 ms
Long Tasks 0 → no change 0 – 0
DOM Elements 99 → no change 99 – 99
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 → no change 0 – 0
A11y Failures 0 → no change 0 – 0
A11y Failing Nodes 0 → no change 0 – 0

Main thread work

Task Time Share Duration Simulated
other 43% 61 ms
style layout 41% 59 ms
parse HTML 6% 8 ms
script evaluation 5% 8 ms
paint composite render 4% 6 ms
script parse compile 0% 0 ms
Total 142 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 236 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 5, 2026, 8:29 AM UTC 100 811 ms 0 0 ms 15.6 kB 3/3 ±0 4,486 +80% 20.5s Wayback
Sep 28, 2026, 3:57 AM UTC 100 870 ms 0 0 ms 15.1 kB 3/3 ±0 3,313 +33% 20.4s Wayback
Sep 20, 2026, 11:02 PM UTC 100 857 ms 0 0 ms 15.6 kB 3/3 ±0 2,345 -6% 21.1s Wayback
Sep 13, 2026, 10:56 PM UTC 100 905 ms 0 0 ms 16.3 kB 3/3 ±0 2,899 +17% 20.9s Wayback
Sep 6, 2026, 9:05 PM UTC 100 892 ms 0 0 ms 16.0 kB 3/3 ±0 2,310 -7% 20.6s Wayback
Aug 30, 2026, 8:41 PM UTC 100 904 ms 0 0 ms 15.7 kB 3/3 ±0 2,905 +17% 19.8s Wayback
Aug 21, 2026, 11:26 AM UTC 100 906 ms 0 0 ms 15.7 kB 3/3 ±1 2,473 -1% 23s Wayback

Embed this score

Use this web component to show atomwolf.org'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://www.atomwolf.org/"></speedlify2-score>