Replace any files downloaded in web pages. * Use case You create a new js file and want to try it in a real environment. Input the URL to the prod file (e.g. https://prod.example.com/js/script.js) as "Original URL" and the URL to the staging file (e.g. https://stg.example.com/js/script.debug.js) as "New URL". Then you will see the staging file run in the prod environment.