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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Summary

Perfect site of the week

traintimes.org.uk/live/btn

100PERF 100A11Y 100BEST 100SEO ✓AXE ✓CWV
Recently measured
  1. nationalrail.co.uk/live-trains/departures/birmingham-new-street
  2. nationalrail.co.uk/journey-planner?adults=1&destination=MAN&extraTime=0&leavingDate=141126&leavingHour=10&leavingMin=00&leavingType=departing&origin=BTN&type=single
  3. thetrainline.com
  4. nationalrail.co.uk
  5. traintimes.org.uk/live/btn
  6. traintimes.org.uk/btn/man/1000/2026-11-14
  7. traintimes.org.uk
Perfect scores 3/7
  • None 3
Median Score ×7 53PERF 100A11Y 96BEST 100SEO !AXE ✗CWV
Performance ×7 Good Warn Bad Axe ×7 Good Warn Bad Core Web Vitals ×7 Passing Failing
Page weight 100k 250k 500k 1M 2.5M 5M + JavaScript Weight 0 100k 250k 500k 1M 2.5M + Third Party Weight 0 100k 250k 500k 1M 2.5M + LCP 2.5s 4s 6s 10s 15s 30s +

Perfect scores 3 sites

These websites score 400 in all 4 Lighthouse categories, have no Axe CLI violations, and have passing (or unknown) Core Web Vitals. Tiebreakers on Speed Index per KB, plus TTFB and blocking time — a heavy site outranks an empty site.

# Site Tool Uses Host Scores Trend LCP CLS TBT Weight Req Lab vs field No-JS ∆ Categories
🥇#1 traintimes.org.uk · · Self-hosted · nginx 100PERF 100A11Y 100BEST 100SEO ✓AXE ✓CWV 809 ms 0 0 ms 23.6 kB221 elements 9 1.9× 1.9%
🥈#2 traintimes.org.uk/live/btn · · Self-hosted · nginx 100PERF 100A11Y 100BEST 100SEO ✓AXE ✓CWV 875 ms 0 0 ms 17.2 kB264 elements 8 0.6× 0.3%
🥉#3 traintimes.org.uk/btn/man/1000/2026-11-14 · · Self-hosted · nginx 100PERF 100A11Y 100BEST 100SEO ✓AXE ✓CWV 833 ms 0 0 ms 19.2 kB800 elements 8 0.6× 24%

Technology

Built with 1 distinct · 3 of 7 detected

  • Next.js Next.js 3

Uses 1 distinct · 4 of 7 detected

  • React React 4

Hosted by 3 distinct · 7 of 7 detected

  • Cloudflare Cloudflare 3
  • Self-hosted 3
  • CloudFront 1