Stencil Eye is a free Chrome add-on designed to help users identify and highlight specific elements on a webpage. It distinguishes between parts of the page that are styled using Stencil and those that are not. This functionality is particularly useful for developers and designers who need to ensure consistent styling across their web projects.

The tool highlights compliant elements in green and non-compliant elements in red. Users can hover over highlighted areas to view the problematic class names, facilitating easier troubleshooting. Additionally, it allows access to the developer console to investigate incorrect styles, making it a practical tool for optimizing web design and development workflows.