allows backwards compatibility with HTTP/1.0 caches, so that clients can specify a "no-cache" request that they will understand (as Cache-Control was not defined until HTTP/1.1).
Quick facts
Description
allows backwards compatibility with HTTP/1.0 caches, so that clients can specify a "no-cache" request that they will understand (as Cache-Control was not defined until HTTP/1.1).
Syntax
Pragma: no-cache
Frequently asked questions
allows backwards compatibility with HTTP/1.0 caches, so that clients can specify a "no-cache" request that they will understand (as Cache-Control was not defined until HTTP/1.1).
It is classified as a general header and can appear in requests or responses depending on context.
Sources & standards
Updated 2026-08-18