Cloudflare Error Page Generator is a tool for creating customized error pages that replicate the appearance of official Cloudflare error pages.
The tool solves the problem of displaying branded error pages when servers encounter failures. It works by providing a generator that produces HTML error pages styled to match Cloudflare's design, which can be embedded directly into websites or served by backend applications. The project includes an online editor for visual customization without requiring code changes, and provides server-side integration libraries for automatic error handling.
Developers should choose this tool if they want error pages that visually match Cloudflare's style for branding consistency or humorous effect. It suits projects built with JavaScript, Node.js, or Python, with ready-made packages available through npm and pip. The tool supports embedding realistic details like Ray IDs, client IP addresses, and data center locations by extracting values from request headers, making pages appear more authentic. The README explicitly warns that using this on production websites carries legal risk due to trademark and branding concerns, and recommends changing text to clarify the page is not official, or ensuring servers are fixed quickly if deployed.
The project maintains an online editor and demo server showing multiple error page variations. Integration examples are provided for Express and Flask applications. The codebase is written primarily in HTML with supporting server-side code, and includes utility functions for extracting Cloudflare-specific request metadata to populate error page fields.
