Nightmare AI

Nightmare AI

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Introduction
Nightmare AI is a free online AI image upscaler and enhancer that improves resolution and quality using Real-ESRGAN.
Listed on
July 23, 2026
FreeWebsiteAI Image EnhancementAI Image RestorationAI Image UpscalingAI Old Photo Restoration
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What is Nightmare AI?

Nightmare AI is an online AI-powered image upscaler and enhancer. It uses Real-ESRGAN algorithms to increase image resolution up to 4K while improving clarity and detail. It is designed for photos, anime, and other images, with features like face enhancement and old photo restoration.

How to use Nightmare AI?

  • To use Nightmare AI, upload a JPG, PNG, or WebP image (under 10MB). Then click the upscale button to automatically enhance the image, choosing your desired resolution (2K or 4K). Finally, download the high-resolution result.

Core features of Nightmare AI

  • AI image upscaling to 2K/4K
  • Photo enhancement and unblurring
  • Anime and cartoon upscaling
  • Old photo restoration
  • Face enhancement
  • Free version available
  • Batch processing (Pro)

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