Client-side technologies refer to the tools and languages used to create the part of a website or application that users interact with directly in their web browsers. Common examples include HTML, CSS, and JavaScript. These technologies work together to build the layout, style, and functionality of web pages, ensuring a smooth user experience. When a user visits a website, their browser processes client-side code to render the content visually. This means that any changes or interactions, such as clicking buttons or filling out forms, happen on the user's device without needing to communicate with the server for every action.