Stable Diffusion WebGPU demo is a web-based application that allows users to generate images using the create-react-app framework. Users need JavaScript enabled and the latest Chrome version, with specific flags enabled for Experimental WebAssembly and JavaScript Promise Integration. The image generation process involves inference steps, with each taking around 1 minute plus 10 seconds for the VAE decoder. The UNET model runs on the CPU for better performance, providing accurate results. The application offers a user-friendly interface, model loading, image generation, result viewing, and troubleshooting guidance in the FAQ section.

Despite some limitations like incomplete webgpu implementation and lack of multi-threading support, the developer actively works on improvements, sharing the source code on GitHub and providing a patched version of onnxruntime for local use.