Nightmare AI is a free online AI-powered image enhancement platform focused on upscaling with super-resolution, old photo restoration, and style transfer.
The tool offers free basic processing, such as 2x upscaling. Higher resolutions (2K/4K) and advanced features may require credits or a paid plan.
It supports common formats like PNG, JPG/JPEG, and WEBP, with typical file sizes under 10 MB.
It uses AI algorithms like Real‑ESRGAN to perform super‑resolution, aiming to improve resolution and clarity while preserving quality and original features.
Yes. Its old photo restoration includes intelligent colorization to turn black-and-white photos into color while repairing scratches and stains.
As an online tool, it processes images in the cloud. Please refer to its privacy policy for details on data handling.

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