Security verification page shown when Cloudflare needs to verify human visitors
interactive-challenge.htmlLoading page shown during Under Attack Mode or JS verification
js-challenge.htmlServer error page for 500, 502, 503, 504 errors
5xx-error.htmlTechnical error page for Cloudflare 1xxx errors
1xxx-error.htmlAccess denied page when blocked by Web Application Firewall
waf-block.htmlToo many requests page for rate-limited users
rate-limit.htmlGeographic restriction page for blocked regions or IPs
ip-country-block.htmlGeneric error page template for customization
base-template.html
These pages include Cloudflare-specific tokens like ::CF_WIDGET_BOX:: and ::CLOUDFLARE_ERROR_500S_BOX::.
These tokens will appear as plain text when viewing locally but will be replaced with actual Cloudflare widgets when deployed to Cloudflare.