What function does the Gradient tool perform in Photoshop?

The Gradient tool in Photoshop is designed to create a gradual blend between multiple colors, which is integral in achieving smooth transitions and effects in both background and foreground elements. This tool allows users to select colors and control the transition between them, providing visual depth and interest in artwork. By using various gradient styles, such as linear, radial, or angled, artists can manipulate how colors blend into each other, enhancing composition and design.

The capability to adjust opacity and the gradient's specific characteristics adds further versatility, allowing for unique artistic expressions. It can be applied to layers, selections, or even as a mask, making it a crucial tool for creating complex visual effects in Photoshop. Understanding how to effectively use the Gradient tool can significantly enhance the quality of any graphic design project.