The State of Web Vitals · Framework

Svelte — Core Web Vitals

Field data PhoneDesktopAll October 2026 edition · Phone field outcomes
65.3% of Svelte sites pass all three Core Web Vitals
  • #5 of 11 frameworks by overall pass rate
  • Add TTFB and only 51.0% still pass
  • Runs on 0.2% of all sites measured (467 crawled Svelte sites, 355 with phone field data)

The distribution, not just the median

Each bar is the good / needs-work / poor split for Svelte. The marks where the whole fleet sits, so you can see who is ahead and who is behind.

LCP 2.1s p75
83.5% good ▲ fleet 81.8%
INP 153ms p75
88.7% good ▼ fleet 91.8%
CLS 0.05 p75
85.9% good ▼ fleet 88.9%
TTFB diagnostic 934ms p75
68.8% good ▲ fleet 59.0%
FCP diagnostic 1.6s p75
81.2% good ▲ fleet 75.5%
Where Svelte loses ground: INP — 88.7% of sites pass, against 91.8% across the fleet. The fingerprint below shows which habits move that number.

framework standings

#1 htmx 82.0% #2 Alpine 78.3% #3 React 73.6% #4 jQuery 70.2% #5 Svelte 65.3% #6 Vue 62.5% #7 Nuxt 48.3% #8 Remix 46.9% #9 Next.js 42.6% #10 Gatsby 38.8% #11 Angular 37.1%
All frameworks →

210,902 crawled sites (126,761 with phone Chrome field data), representing millions of real page loads, October 2026 edition. How we measured.