Fontcycler is an early beta version Chrome extension by Matthew Connelly, designed to allow users to preview fonts on any webpage effortlessly. By simply clicking on a text element, users can change the font instantly. The extension is easy to use, requiring users to click on the extension icon to enable it before selecting any text element to change the font.

In its current state, Fontcycler's main features include the ability to preview fonts on the go without hassle. However, some pending functionalities like displaying a list of fonts to choose from and integrating Google Fonts API for search and sort functionalities are yet to be implemented.