The US Visa Auto Rescheduler extension is designed to automatically reschedule US Visa application appointments to an earlier date on the AIS US Visa website. Upon installation, the extension redirects you to the AIS US Visa homepage, where you can select your country and activate the script from the extension pop-up. By providing your user email and password, the extension enables auto-login to prevent logouts on the AIS portal.

The extension offers settings such as enabling auto-booking for earlier dates, setting the frequency of date availability checks, selecting start and target dates, and a reset option to clear settings. It operates by decreasing credit only when it finds a date, ensuring credits are not used if no appointments are available. It's important to note that while the extension functions well for English language users, changes to the US website may affect its performance, with periodic updates planned to match any alterations.