REGMIO is a Chrome extension developed by vezedoes that streamlines the process of registering multiple accounts by automatically filling out input fields on supported websites. Users enter their details in the extension's popup, such as first name, last name, and more, then click "Set" to enable the autofill feature. By selecting an icon representing the desired site, users are redirected to the site with all input fields pre-filled.

While REGMIO expedites the registration process, manual input is still required on the specific site after the autofill. Notably, the extension does not support popular platforms like TikTok, Instagram, and Discord due to technical limitations. Furthermore, the developer assures users that no personal data is stored, with the project's source code publicly available on GitHub for transparency and security.