htmx — Core Web Vitals

Field data PhoneDesktopAll October 2026 edition · All devices field outcomes
79.8% of htmx sites pass all three Core Web Vitals
  • #1 of 11 frameworks by overall pass rate
  • Add TTFB and only 50.6% still pass
  • Runs on 0.1% of all sites measured (301 crawled htmx sites, 285 with field data)

The distribution, not just the median

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

LCP 1.9s p75
90.5% good ▲ fleet 82.5%
INP 108ms p75
98.8% good ▲ fleet 94.7%
CLS 0.03 p75
87.3% good ▼ fleet 87.8%
TTFB diagnostic 1.1s p75
58.5% good ▼ fleet 58.7%
FCP diagnostic 1.5s p75
82.8% good ▲ fleet 76.6%
htmx is strong across the board. Even its weakest metric, CLS (87.3% good), is ahead of the fleet’s 87.8%. The fingerprint shows the habits behind it.

framework standings

All frameworks →

210,902 crawled sites (196,263 with Chrome field data), representing millions of real page loads, October 2026 edition. How we measured.