Dynamic URL Rewriting At The Edge Comes To Cloudflare In The Form Of Transform Ruleshttps://blog.cloudflare.com
Cloudflare has just announced the availability of Transform Rules for all Cloudflare plans. I had access to 2 URL Rewrite Rules in the free plan.
Transform Rules provide Cloudflare administrators with the ability to create URL rewrite rules. They can reroute or modify HTTP requests before they’re passed to servers.
At the moment it only supports URL rewrites, they have plans to support additional rule types in the near future (such as HTTP request header modification).
It should be available in the Rules section of your Cloudflare dashboard.
More info in their help documentation.