Do you know theme.json is the heart of the Block Based (FSE) Theme? If you want to develop a functional and powerful block (FSE) theme then you have to be a master in theme.json Theme.json is a configuration file for theme styles and block settings. This session will go through the in-depth parts of the theme.json and how it may help you to develop an outstanding block theme. After completing this session, you will be able to make a block theme more efficiently and also can convert your classic theme into a hybrid theme by adding theme.json