Backstop Generator

Backstop Generator helps you build and manage visual regression tests for your Drupal site using BackstopJS. This module simplifies the process of creating test scenarios, configuring viewports, and running tests to ensure your site's visual integrity across different devices and screen sizes. Changes you make in the interface will be reflected in the BackstopJS JSON file, allowing you to easily manage and run your visual regression tests.

In addition to creating the config json file, the module records our choices and saves it as configuration so that you can iterate and improve the results. 

You can find the module at the Backstop Generator project page.