SiteBlocker is a free Chrome add-on aimed at enhancing user productivity by blocking specified websites. This tool allows users to create a personalized list of distracting sites, ensuring that focus remains on important tasks. In addition to its primary blocking feature, SiteBlocker offers a unique YouTube channel whitelisting option, enabling users to enjoy content from selected channels without interruptions.

The add-on also includes customizable blocking hours, giving users the flexibility to manage their online activities effectively. By setting specific time frames during which certain sites are blocked, users can better align their browsing habits with their productivity goals. SiteBlocker is a straightforward and effective tool for anyone looking to minimize distractions and stay on task.