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URL normalization settings

The Cloudflare dashboard provides the following settings to manage URL normalization:

  • Normalization type (default: RFC-3986)

    • Selects the type of normalization to perform:

      • RFC-3986 – Applies URL normalization strictly according to RFC 3986.

      • Cloudflare – In addition to what is defined in RFC 3986, applies the following URL normalization techniques:

        • Normalize back slashes (\) into forward slashes (/).
        • Merge successive forward slashes (for example, // will be normalized to /).
  • Normalize incoming URLs (default: On)

    • Configures the URLs of all incoming traffic to Cloudflare:

      • When enabled, all incoming URLs are normalized before they pass to subsequent Cloudflare features that can receive a URL as input, such as Page Rules, Firewall Rules, Workers, and Access.
      • When disabled, incoming URLs are not normalized before passing to subsequent Cloudflare features.
  • Normalize URLs to origin (default: Off)

    • Configures URLs sent to the origin:

      • When enabled, requests sent to the origin are normalized.
      • When disabled, requests sent to the origin are not modified.
    • You can only view and enable this option when Normalize incoming URLs is enabled.

​​ Configuration examples

The following table shows how URL normalization settings affect incoming URLs before they pass to other Cloudflare features and to origin:

Incoming URLNormalization typeNormalize incoming URLsNormalize URLs to originURL passed to Cloudflare edgeURL passed to origin\\\th\\\th\\\th\\\th\\th\