Cloudflare _redirects Preflight

An independent, experimental browser-only checker for people maintaining _redirects files for Cloudflare Pages or Workers Static Assets. Paste non-sensitive rules or select a local file, run preflight, review line-specific diagnostics linked to official documentation, and export a JSON report.

Checks documented syntax, supported status codes, rule-count and declaration limits, ordering and placeholders. It does not run Cloudflare's production parser or fetch destination URLs; it cannot inspect account settings, framework routing, or requests handled by Functions or Worker code. A clean report is not a deployment guarantee.

Rule text and filenames are not sent by the app. The public experiment records limited categorical usage events using a temporary tab-session ID. No signup or payment. Built with AI assistance; independent, not an official Cloudflare product.