Gerrit FE Dev Helper is a Chrome extension designed to assist frontend developers working on Gerrit sites. This free extension provides a range of tools and features specifically tailored for Gerrit's user interface.

With Gerrit FE Dev Helper, frontend developers can enhance their development workflow by utilizing features such as CORS preflight interception, npm dependency updates, and a more visually appealing extension interface. The extension also includes the ability to modify header values and inject JavaScript modules for plugins written in Polymer 3. Additionally, it allows for the addition, removal, and modification of rules to customize the behavior of the extension.

Overall, Gerrit FE Dev Helper is a valuable tool for frontend developers working on Gerrit sites, offering enhanced functionality and ease of use.