Mouse Block is a Chrome add-on that aims to facilitate keyboard accessibility testing for web developers. By preventing the use of a mouse or touchpad, this extension encourages developers to rely solely on keyboard navigation during testing.

Web developers are responsible for ensuring that the pages and components they create are keyboard accessible, in accordance with the Web Content Accessibility Guidelines (WCAG). While it is possible to test keyboard accessibility by using only the keyboard and refraining from using the mouse or touchpad, breaking the reflexive habit of reaching for the mouse can be challenging.

Mouse Block addresses this challenge by blocking all mouse interactions within the viewport. This means that developers must rely exclusively on keyboard inputs to interact with the page. By removing the option of using the mouse, Mouse Block encourages developers to thoroughly test keyboard accessibility and identify any potential issues.

With its simple and straightforward functionality, Mouse Block provides a helpful tool for web developers who are dedicated to creating accessible websites. By promoting keyboard navigation testing, this add-on contributes to the overall improvement of web accessibility standards.