methodology / Modern Web / #30
HTTP/3 support
live factor #30 · Modern Web · scoring impl: implemented · weight 0.7%
What we measure
HTTP/3 is the newest version of HTTP, built on QUIC. It loads faster on lossy mobile networks. Cloudflare, Fastly, and most modern CDNs support it; legacy hosts don't.
How to improve your score
Front your site with Cloudflare or another HTTP/3-capable CDN. Toggle in CDN settings.
Data source
Data source for this factor is not yet documented.
Scoring
Scoring formulas are versioned with the methodology. The current method (v1.1.0) maps raw measurements to pass, warn, fail. Factor weights determine how much each contributes to the composite — see the methodology index for the full table.
Version history
| Version | Change | Date |
|---|---|---|
| v1.1.0 | Factor introduced. Status: live. Scoring impl: implemented. | 2026-04-25 |