Description: Web-Based Multimodal User Interfaces are systems that integrate multiple modes of interaction, such as text, voice, gestures, and graphics, to enhance user experience in web environments. These interfaces allow users to interact with applications and services in a more natural and efficient manner, leveraging the capabilities of modern browsers and web technologies. By combining different modalities, the aim is to facilitate accessibility and usability, enabling users to choose the mode of interaction that best suits their needs and contexts. Key features of these interfaces include adaptability, personalization, and the integration of technologies such as voice recognition, computer vision, and haptic feedback. Their relevance lies in the growing demand for more intuitive and seamless user experiences in various digital platforms, especially as digital interaction has become ubiquitous. As web technologies continue to evolve, multimodal interfaces are positioned as a key solution for enhancing human-computer interaction, allowing for richer and more effective communication between users and machines.