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HTTP/2 | Glossary | Sitecheck

HTTP/2 is the second major revision of the HTTP protocol. Its key improvements over HTTP/1.1 are request multiplexing (multiple requests over a single TCP connection), header compression (HPACK), and server push — all reducing round-trips and latency.

Why it matters: HTTP/2 significantly reduces load time for pages with many resources (scripts, fonts, images) without requiring any code changes on your end.

Quick tips:

Most modern web hosts and CDNs support HTTP/2 with no configuration needed — check your response headers for HTTP/2.
HTTP/2 requires HTTPS in all major browsers.
Consider upgrading to HTTP/3 for even better performance on unreliable networks.