CSS Injector is a free Chrome add-on designed to enhance your web browsing experience by allowing users to inject custom CSS styles on a per-website basis. This tool provides a seamless way to override the default CSS of any webpage, enabling users to personalize their views without the need for page reloads. The changes made through the injector are preserved even after closing tabs, ensuring a consistent browsing experience across sessions.

The add-on is particularly useful for web developers and designers who need to test styles quickly or for users looking to customize the appearance of their favorite websites. With its straightforward interface, CSS Injector allows for quick and easy adjustments, making it a valuable tool for anyone interested in web customization.