This Chrome add-on allows web developers to preview their websites in both dark and light modes at the same time, enhancing the design process. By providing a side-by-side comparison, it enables developers to make informed decisions about color schemes and user experience across different display settings. The tool is designed to streamline the development workflow, ensuring that designs are visually appealing and accessible in both modes.

The add-on is free to use and integrates seamlessly within the Chrome browser. It serves as a practical tool for developers focusing on responsive design, helping them to identify potential issues related to contrast and visibility. With its straightforward functionality, this add-on is a valuable asset for anyone looking to optimize their website for diverse user preferences.