Banished is a free Chrome add-on designed specifically for educational environments to enhance internet safety by blocking undesirable websites. It allows educators to create specific rules for restricting access to certain URLs or patterns, ensuring that students are unable to bypass established filters. The tool is particularly useful in school settings where maintaining a focused learning environment is essential.

The add-on operates by utilizing a rules.json file, which enables users to define the specific websites or patterns they wish to block. This feature provides a straightforward method for managing internet access and helps uphold educational standards by preventing distractions. Overall, Banished serves as an effective solution for institutions looking to control the online activities of students.