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Managed CDN

Managed CDN

How Cache Rocket delivers cloud-optimized CSS/static assets on assets.cacherocket.com and WordPress images on img.cacherocket.com/wp/.

Managed CDN is Cache Rocket’s own edge delivery. WordPress cloud images (optimization and LQIP) are served from https://img.cacherocket.com/wp/…. Critical CSS and optional Next.js /_next/static stay on https://assets.cacherocket.com.

You do not add assets.cacherocket.com or img.cacherocket.com as custom CDN hostnames. The WordPress plugin rewrites eligible URLs automatically when those Media features are enabled and your plan includes Managed CDN.

INFO: Two different CDN stories

Managed CDN delivers Cache Rocket-optimized assets. CDN integrations connect your Cloudflare, Bunny, Fastly, or KeyCDN account to purge and rewarm HTML/page URLs. Both require the Managed CDN / CDN entitlement on paid plans, but they solve different problems.

What it delivers

  • Optimized images — WebP/AVIF (plan-dependent) after cloud image jobs, on img.cacherocket.com/wp/…. See Image optimization.
  • Critical CSS — generated critical.css files on assets.cacherocket.com, injected by the WordPress plugin. See Critical CSS.
  • LQIP placeholders — tiny blurred previews (inline and/or CDN under img.…/wp/…). See LQIP.

Bandwidth and plans

Managed CDN egress is metered as CDN bandwidth (GB / month) on your subscription. Starter, Pro, and Business include increasing monthly allowances. When bandwidth is exhausted, new CDN-backed optimization work hard-stops until the quota resets or you upgrade. See Plans and limits.

| Plan signal | Meaning | | — | — | | Managed CDN entitlement | Cloud asset delivery and related CDN features are available. | | CDN bandwidth GB / month | How much optimized-asset egress you may use this period. | | CDN purges / day | Daily budget for BYO CDN purge → rewarm actions. |

Cleanup when you disable a feature

In the WordPress plugin, disabling a cloud Media feature deletes that site’s related objects from Cache Rocket CDN storage and attempts an edge purge. That keeps unused assets from lingering after you turn a feature off.

Custom CDN hostnames

Optional custom CDN rewriting (your own hostnames under Advanced) is separate. Do not list assets.cacherocket.com or img.cacherocket.com there—they are configured automatically for cloud assets. Use custom hostnames when you already serve static files from Cloudflare, Bunny, or another provider.

Common questions

Is Managed CDN available on Free?

WordPress Managed CDN (images on img.cacherocket.com/wp/, Critical CSS on assets.cacherocket.com) starts on WordPress Starter and SaaS Starter. Free includes a small Next.js image CDN trial via @cacherocket/next (img.cacherocket.com/i/…) — see Next.js.

Do I need my own CDN or object-storage accounts?

No. Cache Rocket operates storage and edge for Managed CDN and the Next.js image CDN. You only need a Cache Rocket plan with the matching entitlement.

Can I use image CDN without WordPress?

Yes. Install @cacherocket/next for next/image delivery on img.cacherocket.com/i/…. WordPress cloud images use the plugin and img.cacherocket.com/wp/…; Critical CSS stays on assets.cacherocket.com.