Capability
Batch Image Upscaling
20 artifacts provide this capability.
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via “progressive image upscaling with multi-pass refinement”
Stable Diffusion web UI
Unique: Implements multi-pass diffusion-based upscaling via repeated img2img with decreasing denoising strength, combined with optional traditional upscalers (RealESRGAN, BSRGAN, SwinIR). Supports arbitrary upscaling factors and custom upscaler selection. Progressive refinement preserves composition while adding fine details.
vs others: More flexible than single-pass upscalers (multi-pass refinement, diffusion-based enhancement) and better quality than traditional upscalers alone (diffusion refinement adds details)