DevUtilsNow
Browse tools
// http header · caching header

Cache-Control

Directives for caching in browsers and proxies

What the Cache-Control header does

Cache-Control is the primary header for caching, carrying directives for browsers and proxies: max-age=3600 (cache for an hour), public/private, no-cache (revalidate before use), and no-store (don't cache at all). It overrides the older Expires header.

Example

Cache-Control: max-age=3600, public

Where it's used

Cache-Control is a caching header. Caching headers control how browsers and proxies store and reuse responses.

Other caching headers

Cache-Control Age Expires Vary
TOOL

HTTP Headers Parser

Turn a block of raw headers into readable JSON.

REFERENCE

All HTTP Headers

Common request, response, caching, CORS, and security headers.

GUIDE

How to Read and Parse HTTP Headers

The anatomy of headers and how to work with them.