Domain Swapper is a browser extension designed for Chrome that simplifies the process of swapping between hostnames while keeping the rest of the URL intact. This tool is especially useful for developers who frequently need to test specific pages or application paths across different environments, such as moving between a local development setup and a production system or other testing environments.

With Domain Swapper, users can quickly switch between various hostnames without the need to manually adjust the address in the browser's location bar. This streamlined approach saves time and reduces interruptions to the workflow, making it an efficient tool for web developers and testers.