Quietly useful when things go wrong

Clear error pages for every c11d project.

A compact, dependency-free set of service notices designed to stay readable, reassuring and on-brand—even when the rest of the stack is having a bad day.

HTTP & origin errors

Individual pages for Custom Error Rules and application-level responses.

400Bad requestRequest issue 401Sign-in requiredAuthentication 403Access deniedPermission issue 404Page not foundMissing page 408Request timeoutConnection issue 429Too many requestsSlow down 500Internal server errorService issue 502Bad gatewayService issue 503Service unavailableService issue 504Gateway timeoutService issue 520Unknown errorOrigin issue 521Web server is downOrigin issue 522Connection timed outOrigin issue 523Origin unreachableOrigin issue 524Response timeoutOrigin issue 525SSL handshake failedSecure connection issue 526Invalid SSL certificateSecure connection issue 530Origin errorConfiguration issue

Cloudflare templates

Grouped Error Page types, including required diagnostic and challenge tokens.

5XXServer errorCloudflare Error Page 1XXXCloudflare errorCloudflare Error Page 403Request blockedCloudflare Error Page 403Access deniedCloudflare Error Page 403One more stepCloudflare Error Page 403Checking your connectionCloudflare Error Page 429Too many requestsCloudflare Error Page