The Hatena Blog's New Window Preview Auto Reloader is a free Chrome add-on developed by FromAtom. This add-on automatically reloads the new window preview in Hatena Blog. It allows users to take a break from typing and have their preview window refreshed when they pause, giving them time to enjoy a cup of coffee without having to manually click the reload button.

Please note that this add-on only works on the edit page of Hatena Blog and is not available for use in the popup-style editing page that appears when clicking "Write an Article" from the header of the blog page.

With the Hatena Blog's New Window Preview Auto Reloader, users can conveniently keep their new window preview up to date without any manual intervention, making the writing and editing process smoother and more efficient.