WQI.web​qualityindex

Performance

Brotli / gzip compression

Compress HTML, CSS, JS, and JSON over the wire. Brotli beats gzip; gzip beats nothing.

Authority
IETF
Version
RFC 7932 / RFC 1952
Jurisdiction
Global
Source
datatracker.ietf.org
Last reviewed
2026-04-28
Last verified
pending

What it is

Content-encoding negotiation: server compresses text payloads, client decompresses. Brotli (RFC 7932) achieves 15–25% better ratios than gzip for HTML and CSS.

Why it matters

First-byte and full-page-load times depend heavily on payload size. Compression is one config flag away on every CDN and origin server.

Who it applies to

Every HTTP response with text content.

How WQI scores it

Web Quality Index considers this standard satisfied when the supporting factor passes.

# Factor Status
10 Compression (Brotli / gzip) live

Related standards

See also
HTTP/2 , HTTP/3 , CWV

Other references