Transform Rules examples

Add a wildcard CORS response header

Create a CORS response header transform rule to add an Access-Control-Allow-Origin HTTP header to the response with wildcard as static value. (cookiename=value).

Add a request header with the current bot score

Create a request header transform rule to add a X-Bot-Score HTTP header to the request with the current bot score.

Add request header with a static value

Create a request header transform rule to add an X-Source HTTP header to the request with a static value (Cloudflare).

Add a request header for subrequests from other zones

Create a request header transform rule to add an HTTP header when the Workers subrequest comes from a different zone.

Add a response header with a static value

Create a response header transform rule to add a set-cookie HTTP header to the response with a static value (cookiename=value).

Normalize encoded slashes in URL path

Create a URL rewrite rule (part of Transform Rules) to normalize encoded forward slashes (%2F) in the request path to standard slashes (/).

Remove a request header

Create a request header transform rule (part of Transform Rules) to remove the cf-connecting-ip HTTP header from the request.

Remove a response header

Create a response header transform rule (part of Transform Rules) to remove the cf-connecting-ip HTTP header from the response.

Rewrite blog archive URLs

Create a transform rule to rewrite the URL format /posts/<YYYY>-<MM>-<DD>-<TITLE> to the new format /posts/<YYYY>/<MM>/<DD>/<TITLE>.

Rewrite path of moved section of a website

Create a URL rewrite rule (part of Transform Rules) to rewrite everything under /blog/<PATH> to /marketing/<PATH>.

Rewrite path of archived blog posts

Create a URL rewrite rule (part of Transform Rules) to rewrite any requests for /news/2012/... URI paths to /archive/news/2012/....

Rewrite path for object storage bucket

Create a URL rewrite rule (part of Transform Rules) to rewrite any requests for /files/... URI paths to /....

Rewrite image paths with several URL segments

Create a URL rewrite rule (part of Transform Rules) to rewrite any requests for /images/<FOLDER1>/<FOLDER2>/<FILENAME> to /img/<FILENAME>.

Rewrite URL query string

Create a transform rule to rewrite the request path from /blog to /blog?sort-by=date.

Rewrite page path for visitors in specific countries

Create two URL rewrite rules (part of Transform Rules) to rewrite the path of the welcome page for visitors in specific countries.

Set a response header with the current bot score

Create a response header transform rule (part of Transform Rules) to set an X-Bot-Score HTTP header in the response with the current bot score.

Set response header with a static value

Create a response header transform rule (part of Transform Rules) to set an X-Bot-Score HTTP header in the response to a static value (Cloudflare).