speedlify2

Lighthouse lab metrics, Axe, and Chrome UX Report field data for a list of sites recorded and compared over time.

Charts Measurement runs Embed a score

seasonal.today

https://seasonal.today/

99 100 100 100 ✓AXE –CWV

Ranks Overall #243 Built Awesome #202

Data from Sep 6, 2026, 5:40 AM UTC old Measured once a week · 3 runs since Aug 21, 2026

Test elsewhere: PageSpeed Insights · Calibre · Treo · CrUX Vis

Stack

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

Lighthouse Scores

99
Performance
↓ -1 (-1%)
100
Accessibility
no change
100
Best Practices
no change
100
SEO
no change

Lab metrics Lighthouse, mobile

Metric Current Previous Change Best Worst Trend
LCP Largest Contentful Paint 1.67 s 821 ms ↑ +852 ms (+103.8%) 821 ms 1.69 s
CLS Cumulative Layout Shift 0 0 → no change 0 0
TBT Total Blocking Time 0 ms 0 ms → no change 0 ms 0 ms
FCP First Contentful Paint 1.57 s 821 ms ↑ +746 ms (+90.9%) 821 ms 1.69 s
Speed Index 1.57 s 821 ms ↑ +746 ms (+90.9%) 821 ms 1.69 s
TTFB Time to First Byte 613 ms 482 ms ↑ +131 ms (+27.2%) 482 ms 614 ms

LCP Subparts lab observed, unthrottled

The subparts attribute LCP to your server, resource discovery, download, or rendering. Note that the Lab metrics LCP metric shown above is throttled.

element render delay 55 ms
time to first byte 11 ms

Page weight

Metric Current Previous Change Best Worst Trend
Page Weight 76.8 kB 76.6 kB ↑ +190 B (+0.2%) 76.6 kB 78.1 kB
Requests 27 27 → no change 27 27
Third-party Weight 12.6 kB 12.0 kB ↑ +614 B (+5.1%) 12.0 kB 13.9 kB
Third-party CPU 5 ms 4 ms ↑ +1 ms (+14%) 4 ms 5 ms
Unused JS 0 B 0 B → no change 0 B 0 B
Unused CSS 0 B 0 B → no change 0 B 0 B

By resource type

  • image 60.7% 46.6 kB · 20 req
  • script 17.1% 13.2 kB · 3 req
  • document 13.1% 10.1 kB · 1 req
  • other 9% 6.9 kB · 3 req

Third parties 2 entities

12.6 kB transferred, 5 ms on the main thread.

Cloudflare script 10.2 kB · 3 ms CPU
Plausible script 2.4 kB · 2 ms CPU

Page health

Metric Current Previous Change Best Worst Trend
Main Thread Work 409 ms 294 ms ↑ +115 ms (+39.1%) 232 ms 409 ms
Long Tasks 0 0 → no change 0 0
DOM Elements 82 82 → no change 82 82
Axe Violations Violating nodes from a full Axe CLI run (more than Lighthouse reports) 0 0 → no change 0 0
A11y Failures 0 0 → no change 0 0
A11y Failing Nodes 0 0 → no change 0 0

Main thread work

other 227 ms
style layout 100 ms
script evaluation 51 ms
parse HTML 15 ms
paint composite render 14 ms
script parse compile 2 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 h2

Measurement log

Every stored run for this URL, newest first.

When Scores PerfLCPCLSTBTWeight RunsSpreadBenchTook
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
Aug 30, 2026, 1:21 AM UTC 100 821 ms 0 0 ms 76.6 kB 3/3 ±1 3,419 +38% 21.2s
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

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>