Localhost Detector is a free Chrome add-on developed by milan.chheda. It falls under the category of Browsers and specifically belongs to the Add-ons & Tools subcategory. This handy tool is designed to detect whether you are accessing the localhost or production environment and displays a prominent red banner only when you are on localhost.

The add-on works by checking certain strings in the URL and adding the red banner if any of the following are present: "localhost", "", "local.", ".local", "staging.", ".stg", "dev.", "test.", and ".test". This ensures that you can easily differentiate between your local development environment and the live production environment.

With Localhost Detector, you can avoid the risk of making unintended changes to your live website by providing a visual indicator that reminds you when you are working on the localhost. This add-on simplifies the process of identifying your environment, making it a useful tool for web developers and testers.