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Definition
What is 4K Upscale?
4K Upscale is an AI image-enhancement tool that increases the pixel resolution of any photo up to 3840×2160 without losing detail. It runs the Aura SR v2 super-resolution model, which reconstructs textures, edges, and small features that a traditional bicubic resize would smear or blur. You drop a JPG, PNG, or WebP file into the dropzone and the model returns a 4× larger image, ready to crop, print, or use as a hero asset on a high-density display. Typical inputs are smartphone photos, scanned negatives, social-media downloads, or stock images that arrive too small for the layout. The output preserves the original colour profile, keeps faces and text legible, and stays artifact-free up to a 4× ratio. No prompts, no sliders, no settings — drop the file and download a print-ready version in seconds. Pair it with the Photo Restore app to revive faded archive scans before upscaling.
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