Productive.ly is a Chrome extension designed to enhance productivity by serving as a self-control tool. It allows users to mark sites as productive or unproductive with a simple click on the extension icon while on the corresponding tab. The extension utilizes localStorage to remember these settings for future visits, providing a personalized browsing experience.

Furthermore, Productive.ly includes a feature that applies an opacity filter to tabs marked as unproductive when productivity mode is enabled. This visual cue helps users stay focused on their productive tasks by reducing distractions from non-essential websites. Overall, Productive.ly aims to promote efficient time management and better online habits for users seeking to boost their productivity.