HTTP/3

Also known as: http/3, quic

The latest version of HTTP, built on QUIC over UDP, designed for lower latency and better mobile behaviour.

Updated 10 February 2026

HTTP/3 replaces TCP+TLS with QUIC, a UDP-based transport that combines connection setup, encryption and multiplexing into fewer round trips. Connections survive network changes (Wi-Fi to cellular) without a full re-handshake.

For users, HTTP/3 mostly means faster page loads on mobile and better performance on lossy networks. It's supported by every major browser and CDN and rolls out transparently.

Related terms

HTTPS

The encrypted version of HTTP, the protocol your browser uses to talk to websites.

TLS

The cryptographic protocol that secures HTTPS and most modern network traffic.