Site Blocker is a free Chrome add-on designed to help users manage their online distractions effectively. This tool allows individuals to easily block any website that may hinder their productivity. Users can simply add URLs to a block list and prevent access to these sites, fostering a more focused browsing experience.

One of the standout features of Site Blocker is its unique unblocking mechanism. To regain access to a blocked site, users must solve a series of arithmetic problems, which serves as a deterrent against impulsive behavior. This feature encourages users to think twice before visiting distracting websites, thus promoting better time management and productivity while using the Chrome browser.