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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seasonal.today

https://seasonal.today/

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

Ranks Overall #261 Built Awesome #204

Data from Oct 4, 2026, 7:15 PM 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

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

Stack

Eleventy 3.0.0 Built with Eleventy 3.0.0
GitHub Pages Hosted by GitHub Pages

Lighthouse Scores LAB Simulated

99
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 1.83 s good ↓ -2 ms (-0.1%) 821 ms – 1.83 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 1.53 s good ↓ -2 ms (-0.1%) 821 ms – 1.69 s
Speed Index 1.53 s good ↓ -2 ms (-0.1%) 821 ms – 1.69 s
TTFB Time to First Byte 463 ms good ↓ -6 ms (-1.3%) 460 ms – 614 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 55 ms
time to first byte 15 ms

Page weight

Metric Value Change / range Trend
Page Weight 77.3 kB ↓ -30 B 76.6 kB – 78.1 kB
Requests 27 → no change 27 – 27
Third-party Weight 12.6 kB ↓ -3 B 12.0 kB – 13.9 kB
Third-party CPU 5 ms ↑ +0 ms (+2.1%) 4 ms – 7 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 60.4% 46.7 kB 20
script 17.1% 13.2 kB 3
document 13.6% 10.5 kB 1
other 8.9% 6.9 kB 3
Total 77.3 kB 27

Third parties 2 entities

Entity Transfer Size Main thread Simulated
Cloudflare script 10.2 kB 4 ms
Plausible script 2.4 kB 1 ms
Total 12.6 kB 5 ms

Page health

Metric Value Change / range Trend
Main Thread Work 399 ms ↓ -30 ms (-6.9%) 232 ms – 428 ms
Long Tasks 1 → no change 0 – 1
DOM Elements 82 → no change 82 – 82
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 53% 209 ms
style layout 26% 106 ms
script evaluation 12% 49 ms
parse HTML 4% 18 ms
paint composite render 4% 15 ms
script parse compile 1% 2 ms
Total 399 ms

Axe violations axe-core 4.13.0, full rule set

0 violating nodes across 0 rules, 248 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 h3

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook Archive
Oct 4, 2026, 7:15 PM UTC 99 1.83 s 0 0 ms 77.3 kB 3/3 ±0 2,470 -1% 21.5s Wayback
Sep 27, 2026, 5:34 PM UTC 99 1.83 s 0 0 ms 77.3 kB 3/3 ±0 2,421 -3% 22.8s Wayback
Sep 20, 2026, 10:50 AM UTC 99 1.82 s 0 0 ms 77.3 kB 3/3 ±0 2,500 +1% 21.9s Wayback
Sep 13, 2026, 9:06 AM UTC 99 1.82 s 0 0 ms 77.2 kB 3/3 ±0 2,470 -1% 21.6s Wayback
Sep 6, 2026, 5:40 AM UTC 99 1.67 s 0 0 ms 76.8 kB 3/3 ±1 2,508 +1% 21.8s Wayback
Aug 30, 2026, 1:21 AM UTC 100 821 ms 0 0 ms 76.6 kB 3/3 ±1 3,419 +38% 21.2s Wayback
Aug 21, 2026, 7:42 AM UTC 99 1.69 s 0 0 ms 78.1 kB 3/3 ±1 4,513 +82% 19.9s Wayback

Embed this score

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