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.

Charts Compare Measurement runs Embed a score Open to Work

Frameworks and LibrariesWarn

Tools that developers use to build the frontends of websites.

14 of 14 sites measured · each site every 2 days, most recently ago

Page weight vs LCP
Third party vs performance
Perfect scores 0/14
Median Score ×14 87 93 100 100 AXE CWV
Performance ×14 Good Warn Bad Axe ×14 Good Warn Bad Core Web Vitals ×14 Passing Failing
Page weight 100k 250k 500k 1M 2.5M 5M + JavaScript Weight 0 50k 100k 250k 500k 1M + Third Party Weight 0 50k 100k 250k 500k 1M + LCP 1s 1.5s 2s 2.5s 4s 6s +

Biggest movers

Sites whose performance score improved by more than this group's normal run-to-run noise. Everything else is jitter and is deliberately hidden.

Leaderboard

Ranked by the circle color first: all green beats a row with amber, which beats red. Sites are not penalized for unknown Core Web Vitals. Tiebreakers include: sum of all four Lighthouse categories, fewest failing Core Web Vitals, then fewest axe violations, then Speed Index per KB — a heavy site outranks an empty one.

# Site Tool Host Scores Perf trend LCP CLSTBT WeightReq Lab vs field No-JS ∆
🥇#1 preactjs.com Vite +1 Netlify 99 100 100 100 !AXE CWV 1.75 s 0 5 ms 103 kB839 elements 18 1.4× 0%
🥈#2 svelte.dev SvelteKit Vercel 96 100 100 100 !AXE CWV 2.58 s 0.051 0 ms 10.38 MB348 elements 71 1.8× 36.2%
🥉#3 lit.dev Listed as Build Awesome — no generator tag found on the page +1 Google Frontend 87 100 100 100 !AXE CWV 3.95 s 0.001 97 ms 516 kB904 elements 35 2.1× 17.4%
#4 solidjs.com Vite +1 Cloudflare 86 92 100 100 !AXE CWV 3.87 s 0.009 47 ms 485 kB363 elements 27 2.2× 77.4%EMPTY
#5 htmx.org Zo +1 Netlify 77 100 100 100 !AXE CWV 4.83 s 0 0 ms 979 kB294 elements 64 3.2× 1.2%
#6 qwik.dev Qwik Cloudflare 98 96 58 92 !AXE CWV 1.85 s 0 63 ms 2.20 MB740 elements 452 1.1× 0%
#7 alpinejs.dev ·+2 Cloudflare 92 93 100 100 AXE CWV 2.88 s 0.001 1 ms 223 kB394 elements 26 1.8× 0.9%
#8 reactrouter.com React Router Fly.io 98 86 100 91 AXE CWV 1.96 s 0 0 ms 309 kB108 elements 22 1.3× 0%
#9 react.dev Next.js Vercel 81 95 100 92 AXE CWV 3.91 s 0 333 ms 1.15 MB1,785 elements 65 1.9× 0%
#10 emberjs.com Ember.js Netlify 72 93 96 100 AXE CWV 5.45 s 0 323 ms 1.16 MB523 elements 48 2.8× 0%
#11 jquery.com WordPress 7.1 Cloudflare 99 86 88 92 AXE CWV 1.69 s 0.001 0 ms 184 kB310 elements 20 1.3× 0.2%
#12 vuejs.org VitePress 2.0.0 Netlify 87 91 100 100 AXE !CWV 2.74 s 0.175 42 ms 219 kB565 elements 25 1.5× 0%
#13 angular.dev Angular 22.1.6 · 60 97 100 92 AXE !CWV 3.04 s 0.108 1.52 s 1.40 MB430 elements 53 1.4× 87.1%
#14 tanstack.com Vite Cloudflare 57 84 100 92 AXE !CWV 7.43 s 0.034 274 ms 3.11 MB1,072 elements 67 1.9× 34.6%

Technology

Built with 10 distinct · 12 of 14 detected

  • Vite Vite 3
  • Angular Angular 1
  • Ember.js Ember.js 1
  • Next.js Next.js 1
  • Qwik Qwik 1
  • React Router React Router 1
  • SvelteKit SvelteKit 1
  • VitePress VitePress 1
  • WordPress WordPress 1
  • Zola 1

Uses 5 distinct · 5 of 14 detected

  • Preact Preact 2
  • Alpine.js Alpine.js 1
  • htmx htmx 1
  • Lit Lit 1
  • Solid Solid 1

Hosted by 5 distinct · 13 of 14 detected

  • Cloudflare Cloudflare 5
  • Netlify Netlify 4
  • Vercel Vercel 2
  • Fly.io Fly.io 1
  • Google Frontend Google Frontend 1