DevSwitch - Localhost Overrides is a free Chrome add-on designed for web developers who need to redirect production traffic to their local development environment. This tool operates without the need for login or cloud synchronization, ensuring that all rules are stored locally. Its MV3-native architecture employs declarative rules, minimizing overhead and enhancing efficiency by utilizing the browser's networking capabilities. With a focus on a developer-friendly experience, it allows for easy management of redirection and header modifications.

Key features include regex and pattern-based redirection, enabling users to map specific URLs to their localhost with ease. Users can also set, append, or remove request and response headers where supported. The add-on offers a global kill switch for instant rule deactivation and supports import/export functionality for backing up and sharing rule sets in JSON format. This makes DevSwitch an essential tool for developers looking to streamline their workflow.