Best 4k upscaler AI tools

Nightmare AI is a powerful online tool that uses advanced AI algorithms like Real-ESRGAN to upscale images to 4K, enhance photo quality, and restore old, damaged photos. It specializes in improving photos, anime, and cartoons without losing detail. Offering a user-friendly interface, it provides both free and premium plans for photographers, artists, and content creators.

UniFab Studio is an all-in-one, AI-powered video enhancement suite designed for professionals and enthusiasts. It elevates video quality by upscaling to 4K/8K, converting SDR to HDR, stabilizing shaky footage, removing noise, and increasing frame rates up to 120FPS. With GPU acceleration and a user-friendly interface, it delivers professional-grade results efficiently.

HiDream.ai is a comprehensive AI creative suite for generating and editing images and videos. It offers powerful tools like text-to-video, image-to-video, 4K enhancement for both images and videos, smart inpainting/outpainting, and unique features like AI Try-on and local animation with a smart brush.

ArtSpace.ai is a powerful AI image generator that transforms text prompts into unique, high-quality art and photorealistic images in seconds. It features a comprehensive suite of editing tools, including 4K upscaling, background removal, inpainting, and outpainting. With multiple AI models for various styles like anime and photorealism, it's an all-in-one solution for creators, marketers, and designers seeking to produce stunning visuals efficiently and affordably.

toona is an all-in-one AI toolbox for anime and manga creators. It allows users to generate videos from images, create stories with famous characters, colorize manga, upscale images and videos to 4K, increase frame rates, and add subtle motion to static art. It's designed to help creators produce viral anime-style content quickly and easily.