Left Navigation is a Chrome browser add-on that enhances browsing experience by adding basic navigation functionality to the left side of the screen. This tool aims to simplify page and tab management, making it more convenient for users to navigate with just one hand using the mouse.

The add-on creates a page/tab navigation area on the left side of the screen, complementing the existing tab bar at the top of the browser. It offers intuitive functions such as navigating back to the previous page by clicking the left button on the upper half, moving forward to the next page by clicking the right button on the upper half, closing the current tab with a left button click on the lower half, and restoring the last closed tab with a right button click on the lower half.