Nightmare Ai
What is Nightmare Ai ?
Nightmare AI is an online AI image upscaling and enhancement tool based on the Real-ESRGAN algorithm, specializing in losslessly enlarging low-resolution images to 2K and 4K HD resolutions. It supports JPG and PNG formats (max 10MB) and offers three core functions: AI Anime Upscaler (optimized for anime, cartoons, and comics with automatic detail completion), AI Photo Upscaler (deblurring and clarity enhancement via Real-ESRGAN), and AI General Image Upscaler. Additionally, it provides Old Photo Restoration and Ghibli Style Conversion features. A free basic version and a paid Pro version are available; the paid plans unlock 2K/4K upscaling, ad-free experience, and additional credits.
- Recording time:2026-07-24
- Is it free:

Website traffic situation
Overview of Participation
(2026-06-01 - 2026-06-30)Website Latest Traffic Status
Traffic source channels
(2026-04-01 - 2026-04-30)Statistical chart of traffic sources
Nightmare Ai Core Features
AI Anime Image Upscaling — Designed specifically for anime, cartoons, and comics, automatically completing details and supporting upscaling to 4K while preserving character features and line clarity
AI Photo Deblurring Enhancement — Enhances photo clarity using the Real-ESRGAN algorithm, supporting 2x/4x upscaling and 2K/4K resolution output
AI General Image Lossless Upscaling — Utilizes advanced super-resolution generative adversarial networks to increase resolution while maintaining sharpness and details for natural, clear results
Old Photo Restoration — Repairs damaged, faded, or low-quality old photos to restore details and colors
Ghibli Style Conversion — Transforms ordinary photos into artistic images in the style of Studio Ghibli animations
Nightmare Ai Subscription Plan
FAQ from Nightmare Ai
What is Nightmare AI?
Nightmare AI is an online AI image upscaling and enhancement tool based on Real-ESRGAN (Enhanced Super-Resolution Generative Adversarial Networks). It can enhance image resolution to 2K or 4K while improving image quality, with optional face restoration. It is suitable for lossless upscaling of anime, photos, and general images.
Is Nightmare AI free?
Yes, Nightmare AI offers a free version where you can upload images for basic upscaling and enhancement. However, to upscale to 2K or 4K resolution, use the Old Photo Restoration feature, or remove ads, you need to subscribe to the Basic Yearly ($7/month) or Standard Yearly ($14/month) paid plans.
Which image formats are supported?
Nightmare AI supports uploading JPG and PNG image files, with a maximum file size of 10MB. It is recommended to upload clear original images for the best upscaling results.
How do I use Nightmare AI to upscale images?
Just three steps: 1) Upload your JPG or PNG image needing upscaling; 2) Click the upscale button and select your target resolution (2K or 4K); 3) Wait for the AI to process automatically and download the high-definition image. The entire process is simple and quick, requiring no technical background.
What is the difference between anime image upscaling and regular photo upscaling?
Nightmare AI provides a dedicated AI Anime Upscaler optimized for anime, cartoons, and comics, which automatically completes line details and colors to ensure the unique artistic style of anime is preserved after upscaling. The Photo Upscaler focuses on deblurring and enhancing clarity for real-world photos, utilizing different algorithmic optimization paths.
How do I get a refund or technical support?
For refunds or technical support, please email support@nightmare-ai.com within 7 days of purchase, and we will process your refund request. You can also join our Discord community for usage help and discussions.
What is the relationship between Nightmare AI and nightmareai on Replicate?
Nightmare AI (nightmare-ai.com) is an online alternative to the nightmareai/real-esrgan model available on Replicate. You can directly use the image upscaling features based on the same algorithm for free on nightmare-ai.com without needing a Replicate account, offering a simpler user experience.
Alternative of Nightmare Ai

AI Image Text Editor is an AI tool focused on intelligent editing of text within images. It allows you to modify existing text in images directly in your browser without needing Photoshop skills. It supports core operations such as replacement, deletion, translation, blurring, and masking, perfectly preserving the original font, color, spacing, background, and layout. Suitable for product images, screenshots, posters, menus, documents, photos, flyers, memes, and more. Sign up to receive 5 free trial credits. Flexible billing options include monthly, annual, and one-time payments, with up to 40% discount on annual plans. All paid plans include commercial usage rights and watermark-free high-definition downloads.

PixMira AI (formerly Banana AI) is a free AI photo editor and image generator that enables users to edit, restyle, transform, and recreate images effortlessly using text prompts. Powered by models like Gemini 3.1 Flash Image, GPT Image 2, and Seedream 4.5, it offers pro-level intelligence with Flash-speed performance up to enhanced 4K resolution. With a comprehensive suite of Magic Tools including AI Background Remover, Image Upscaler, Object Remover, Clothes Changer, and style conversions like Ghibli, Anime, Pixar, and Cyberpunk, PixMira AI delivers results in 1-2 seconds while maintaining identity consistency across edits. Flexible pricing plans start from free with 5 credits, scaling up to Max at $59.99/month with 4,000 credits for heavy usage.

AI Photo Editor is a free online AI-powered photo editing tool that transforms and enhances images using natural language text prompts. Upload JPG, PNG, or WebP files and describe changes like background replacement, skin enhancement, object removal, or style transformation — no advanced design skills needed. Powered by GPT Image 2 and Nano Banana Pro models, it supports precise local edits, portrait polishing, product image enhancement, and creative stylization including Ghibli and vintage aesthetics. Ideal for ecommerce, marketing teams, content creators, and personal photo cleanup with full commercial usage rights.

HowToPose.ai is an AI-powered image editing workflow platform focused on portraits, poses, and styles. It integrates pose reference, virtual try-on, image inpainting, canvas expansion, and export preparation into a unified creative tool. It supports 8 core tools: AI Pose Generator, AI Outfit Changer, AI Image Editor, AI Image Expander, Free AI Image Generator, AI Image Upscaler, Photo-to-Sketch Converter, and AI Watermark Remover. Users can start from a single photo to adjust pose angles, change clothing styles, expand canvas ratios, remove background clutter, and enhance export resolution, completing the entire visual workflow from concept to final product without reshooting. It is suitable for e-commerce marketing, brand photography, social media, fashion styling, and content creation scenarios.

Imgezy is an AI-powered image editing tool that supports intelligent object removal, background replacement, image enhancement, and more. Leveraging advanced AI algorithms, it enables one-click image processing to help users quickly generate high-quality visual content suitable for e-commerce, design, and content creation scenarios.

Sketch To is an AI image generation and conversion tool that supports photo-to-sketch and sketch-to-real-image functions. It features multiple artistic styles and AI models, offering high-resolution output and fast processing capabilities, suitable for designers, content creators, and commercial projects to enhance creative efficiency and visual impact.

Nano Banana is the #1 AI-powered image editing platform that transforms photos with simple text prompts using advanced artificial intelligence. Upload any image and describe your vision to create professional-grade edits instantly including background replacement, object addition/removal, style transfers, color correction, and artistic effects. Perfect for photographers, designers, content creators, e-commerce, and marketing with 500K+ images edited by 25K+ creative professionals worldwide.

Nana Banana AI Photo Editor is an intelligent AI image editor that allows you to edit images through natural language descriptions. It supports AI background removal, style transfer, color changes, object addition and deletion, while preserving facial and personal features, processing quickly within 15 seconds, and providing commercial usage rights. It is suitable for e-commerce sellers, content creators, marketing teams, and small business owners, supporting batch processing, product photo optimization, scene generation, and other professional features, allowing you to create professional-level images without any design skills.