A Graphics API (Application Programming Interface) is a set of tools and protocols that allows software applications to communicate with graphics hardware. It provides developers with the necessary functions to create and manipulate visual content, such as 2D and 3D graphics. Popular examples of Graphics APIs include OpenGL, DirectX, and Vulkan. These APIs simplify the process of rendering images by offering predefined commands and functions. This enables developers to focus on creating their applications without needing to understand the complexities of the underlying hardware. By using a Graphics API, applications can achieve better performance and compatibility across different devices and platforms.