Plexiglass is a free Chrome extension developed by Madalyn Parker that allows developers to disable mouse feedback during development. Inspired by @marcysutton's no-mouse-days library, this extension removes the mouse cursor and adds a black opaque overlay to the page.

By installing Plexiglass, users can still see the page without being able to interact with it using a mouse. The extension achieves this by removing pointer events and applying a black overlay to the entire page.

With mouse interactions disabled, users can challenge themselves to navigate web pages solely using the keyboard. The screen overlay forces users to rely on keyboard inputs and screen readers, enhancing the experience of keyboard navigation and accessibility testing.

Plexiglass is a valuable tool for developers who want to test their code by simulating keyboard-only interactions and evaluating the accessibility of their websites. It provides a unique perspective on how users with disabilities or limited mobility may experience their websites.