How to make a black and white gradient poster

Quick answer：

To create a black and white gradient poster, start with a blank canvas in an image editing software like Adobe Photoshop or GIMP. Create a new layer and fill it with solid black. Then, create another layer above it and fill it with white. Use the gradient tool to fade from black to white in a seamless transition. Adjust the gradient direction and opacity to achieve the desired effect. Add any text or images to complete your poster.