Dream Studio
Dream Studio is a website for generating images with Stable Diffusion, a text to image model.
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Features
Dream studio's main feature is the ability to adjust various configuration parameters of the model, such as height/width of the generated image and steps/sampling algorithm. It allows for in/outpainting.
It currently has an underdeveloped history view (it appears to save pixelated versions of the images to a browser cache, but there is no way to view them).