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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atlas.bi

https://atlas.bi/

95PERF 100A11Y 96BEST 100SEO ✓AXE –CWV

Ranks Overall #412 Built Awesome #319

Data from Oct 5, 2026, 5:56 PM UTC old Measured once a week · 8 runs since Aug 21, 2026

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

Moved from https://www.atlas.bi/.

History from the previous URL is included below, with the move on Sep 28, 2026. A step-change around that point is likely the change of address rather than a regression.

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

Stack

Eleventy 3.1.6 Built with Eleventy 3.1.6
Cloudflare Hosted by Cloudflare

Lighthouse Scores LAB Simulated

95
Performance
↓ -4 (-4%)
100
Accessibility
no change
96
Best Practices
↓ -4 (-4%)
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 2.69 s needs work ↑ +841 ms (+45.5%) significant 1.85 s – 3.37 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 1.84 s needs work ↑ +445 ms (+31.9%) 1.40 s – 2.84 s
Speed Index 1.84 s good ↑ +445 ms (+31.9%) significant 1.40 s – 2.84 s
TTFB Time to First Byte 471 ms good ↓ -176 ms (-27.2%) 464 ms – 820 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 163 ms
time to first byte 70 ms

Page weight

Metric Value Change / range Trend
Page Weight 281 kB ↑ +18.7 kB (+7.3%) significant 236 kB – 281 kB
Requests 13 ↓ -4 (-23.5%) significant 13 – 23
Third-party Weight 0 B → no change 0 B – 23.4 kB
Third-party CPU 0 ms → no change 0 ms – 9 ms
Unused JS 38.2 kB ↓ -31.7 kB (-45.9%) significant 36.0 kB – 71.8 kB
Unused CSS 0 B → no change 0 B – 0 B

By resource type

Type Transfer Share Size Requests
image 66.7% 168 kB 4
script 22.4% 56.4 kB 6
stylesheet 5.9% 14.8 kB 1
document 4.9% 12.4 kB 1
Total 281 kB 13

Page health

Metric Value Change / range Trend
Main Thread Work 478 ms ↓ -137 ms (-22.3%) 341 ms – 615 ms
Long Tasks 1 ↓ -2 (-66.7%) significant 0 – 3
DOM Elements 286 ↓ -5 (-1.7%) 276 – 291
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 → no change 0 – 23
A11y Failures 0 → no change 0 – 4
A11y Failing Nodes 0 → no change 0 – 11

Main thread work

Task Time Share Duration Simulated
other 53% 255 ms
style layout 31% 150 ms
script evaluation 8% 37 ms
parse HTML 4% 18 ms
paint composite render 3% 16 ms
script parse compile 0% 2 ms
Total 478 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 310 passing. This is a standalone Axe CLI run and is stricter than the subset Lighthouse already includes.

Best Practices failures 1 of 15 audits

  • inspector-issues — Issues were logged in the `Issues` panel in Chrome Devtools 1 item

Hygiene

HTTPS HSTS CSP Clickjacking protection Origin isolation Trusted Types bfcache h3

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 5, 2026, 5:56 PM UTC 95 2.69 s 0 0 ms 281 kB 3/3 ±2 2,491 0% 28.4s Wayback
Sep 28, 2026, 10:37 AM UTC 99 1.85 s 0 0 ms 261 kB 3/3 ±0 2,563 +3% 44.9s Wayback
Sep 28, 2026, 3:57 AM UTC old URL 87 3.37 s 0 0 ms 262 kB 3/3 ±3 3,340 +34% 40.8s Wayback
Sep 20, 2026, 11:01 PM UTC old URL 88 3.29 s 0 0 ms 262 kB 3/3 ±0 2,323 -7% 41.4s Wayback
Sep 13, 2026, 10:56 PM UTC old URL 90 3.20 s 0 0 ms 263 kB 3/3 ±6 2,967 +19% 41.5s Wayback
Sep 6, 2026, 9:05 PM UTC old URL 95 2.62 s 0 0 ms 236 kB 3/3 ±12 2,332 -6% 27s Wayback
Aug 30, 2026, 8:41 PM UTC old URL 94 2.74 s 0 0 ms 236 kB 3/3 ±7 3,069 +23% 24.6s Wayback
Aug 21, 2026, 11:26 AM UTC old URL 95 2.68 s 0 0 ms 238 kB 3/3 ±8 2,398 -4% 26.3s Wayback

Embed this score

Use this web component to show atlas.bi'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://atlas.bi/"></speedlify2-score>