Cache-Control Header Builder

Create a copy-ready Cache-Control header for static assets, HTML pages, APIs, and private responses.

Preset

Visibility

Browser max-age seconds

CDN s-maxage seconds

stale-while-revalidate seconds

stale-if-error seconds

no-store no-cache must-revalidate immutable

Use immutable only for file names that change when content changes. Use no-store for account, checkout, or sensitive dashboard responses.

Browser Cache

1 year

Shared Cache

Same

Stale Window

1 day

Warnings

Interpretation

Build a header to review the cache behavior.

Header output

Server examples

Warnings

Ready.