Chrome Extension Mocker is a free tool developed by Sky.Sun that allows users to easily mock data for their Chrome extensions. This tool is perfect for developers who want to test their extensions with different mock responses without the need to modify any code.

To use Chrome Extension Mocker, simply open the dev tools in the Chrome browser by pressing Ctrl+Shift+I or ⌘+⌥+I. Then, navigate to the Mocker panel. From there, you can create new mock data by clicking the New button and entering the desired response.

In the Match Request panel, you can specify which requests should be matched for the mock data. And in the Mock Response panel, you can set the simulated response that you want to return. It's worth noting that when a request is matched, the original request will be redirected to a data URI, which can be viewed in the Console panel.

With Chrome Extension Mocker, developers can easily test and simulate different scenarios for their Chrome extensions, making it a valuable tool for anyone working on Chrome add-ons and tools.