PixiJS Devtools is a Firefox extension designed specifically for web developers using the PixiJS framework. This unofficial tool enhances the development experience by providing essential features such as a scene graph viewer and property editor, allowing developers to interactively manage their PixiJS applications. Users can double-click nodes in the outliner to log them in the console, making debugging more efficient.

Additionally, the extension allows users to outline the active node directly in the viewport, providing visual feedback and easy access to properties. The active node can also be accessed in the developer console using the `$pixi` variable, streamlining the workflow for developers. Right-click functionality in the viewport further enhances usability, enabling quick activation of nodes for a more effective development process.