Have you ever wanted to improve the quality and resolution of your images without losing any details or adding any artifacts? If so, you might be interested in AI image upscaling, a process that can enhance your images for various purposes. However, not all methods are good. Some can make images worse.
That’s why you need AI image upscaler, the most advanced and effective way to upscale your images online for free. In this article, we will explain what image upscaling is and why it is useful, the benefits of using AI image upscaler over traditional methods, and the 10 Best AI Image Upscaler Tools to Upscale Image 4K Online Free
Table of Contents
What is AI Image Upscaler?
AI Image Upscaler is a technology that can enlarge and enhance the quality of images using artificial intelligence. AI Image Upscaler can increase the resolution of images such as making them 4K or HD, without losing details or creating artifacts. AI Image Upscaler is useful for improving the appearance of low-quality images such as those from social media, old photos or digital art.
AI Image Upscaler works by creating new pixels of image information to add detail where there wasn’t any before, filling in the gaps to recreate a higher-resolution image using artificial intelligence. AI Image Upscaler uses machine learning to improve the image, by analyzing image pixels and patterns and predicting what the image will look like if rendered in a higher resolution. This process results in clearer and more detailed images that look more realistic and sharper.
Best AI Image Upscaler Free
Numerous free online image upscaling tools exist, but effectiveness vary. Some may lack features, perform poorly, or be costly. To aid your search, we’ve listed the top 10 tools based on features, performance, and reviews. Each tool’s pros, cons, supported formats, and pricing. A comparison table is provided below for quick reference.
Let’s Enhance

Let’s Enhance is an AI image upscaler that uses deep learning to improve the quality of images. It can be used to upscale low-resolution images, fix blurry or pixelated images, and enhance the colors and details of images. The AI upscaler increases the resolution of AI art, enhancing image quality and details, making them crisp even in 8K.
This makes it ideal for images produced with tools like Midjourney, DALL-E, Stable Diffusion. You can upload your photo by clicking on the folder icon to select which image to upscale. After the image finishes uploading, select the Smart resize upscale in the right panel. Scroll down on the right panel to tweak additional settings if needed.
- Features: Free trial, credits; Requires registration, email verification; Limited free credits per month; 15 MB file size limit
- Pricing: Free (up to 5 images per month), paid (from $9 per month)
Bigjpg

Bigjpg is a free online tool that uses the latest Deep Convolutional Neural Networks to upscale images while maintaining high-quality results. The neural network it adopts is a special algorithm adjusted specifically for the image’s lines and colors.
This allows the images to be enlarged without losing quality. Bigjpg intelligently reduces noise and serration in images, which allows the images to be enlarged without losing quality. With Bigjpg you can upscale image upto 8k and you can choose the amount of noise reduction from low to high.
- Features: AI upscaling (4x) with modes; multi-language support; Batch processing; No file size limit; Limited free credits per day; Potential artifacts or noise
- Pricing: Free (up to 20 images per day), paid (from $1.99 per month)
Deep Image

Deep-image.ai is an innovative application specifically designed for upscaling AI-generated images. It employs state-of-the-art deep learning techniques and neural networks to achieve exceptional results. Its user-friendly interface and efficient processing make it accessible to both beginners and experts.
The neural network it adopts is a special algorithm adjusted specifically for the image’s lines and colors. This allows the images to be enlarged without losing quality. Deep-image.ai intelligently reduces noise and serration in images, which allows the images to be enlarged without losing quality.
- Features: AI upscaling (4x) with modes; Enhances colors, contrast; Batch processing; Free trial, credits; Requires registration, email verification; Limited free credits per month.
- Pricing: Free (up to 5 images per month), paid (from $4.99 per month)
Icons8 Smart Upscaler

Icons8 Smart Upscaler is an online smart upscaler software that enlarges images and photos (JPG, PNG) without losing quality. It uses state-of-the-art Artificial Intelligence to enlarge and enhance images (also called super-resolution). The initial dataset consists of 5 million images.
They constantly add more data to their dataset, synthesizing or shooting as required. Quality images with sharp edges, contrasting colors and clear textures work best. Icons8 Smart Upscaler Results will be less obvious for blurred and over-pixelated pictures.
Icons8 has released a new online tool powered by AI that helps users to enlarge small images and improve their quality easily. Icons8 Smart Upscaler is the shortcut to getting images of low quality bigger and better with the help of machine learning. 5 MB file size limit.
- Features: AI upscaling (4x) with modes; Preserves edges, shapes; multi-language support; Free trial, credits; Requires registration for batch processing; Limited free credits per month.
- Pricing: Free (up to 3 images per month), paid (from $9 per month)
Img.Upscaler

Img.Upscaler is an AI image upscaler that allows users to increase the resolution of their images without losing quality. It can upscale images by 400% and up to 16000×16000 resolution. It supports JPG, PNG, and JPEG formats. The tool is capable of enlarging images without compromising quality.
You can upload your desired photo in image upscaler by clicking on the folder icon to select which image to upscale. After the image finishes uploading, select the upscale type in the right panel. Scroll down on the right panel to tweak additional settings if needed.
- Features: AI upscaling (4x) with auto-detect mode; multi-language support; No registration required; No file size limit; Limited free credits per day; May produce blurry or unnatural results
- Pricing: Free (up to 5 images per day), paid (from $14.99 per month)
Pixelcut Upscaler

Pixelcut upscaler is an AI image upscaler that allows users to increase the resolution of their images without losing quality. It is a web-based tool that uses deep learning technology to upscale images while maintaining high-quality results. The tool is capable of upscaling images up to 4x and even more.
The neural network it adopts is a special algorithm adjusted specifically for the image’s lines and colors. This allows the images to be enlarged without losing quality. Pixelcut intelligently reduces noise and serration in images, which allows the images to be enlarged without losing quality.
Pixelcut Image Upscaler employs sophisticated AI algorithms to transform your Midjourney creations into high-resolution works of art. It meticulously amplifies each detail, elevating your AI-generated images from a 1024x1024px canvas to stunning larger scales.
Pixelcut is a free AI-powered image upscaler that allows users to increase the resolution of their images without losing quality. It can upscale images up to 4x and even more. Pixelcut also offers a paid subscription that starts at $9 per month for 100 images per month.
- Features: Pixelcut is a free AI-powered image upscaler that allows users to increase the resolution of their images without losing quality. It can upscale images up to 4x and even more.
- Pricing: Paid subscription that starts at $9 per month for 100 images per month.
Vance AI Image Enlarger

Vance AI Image Enlarger is an AI image upscaler that allows users to increase the resolution of their images without losing quality. It can upscale images up to 4x and even more. The tool is capable of enlarging images by removing the blur except for suppressing the noise.
Vance AI Image Upscaler is also powered by AI and can serve as the best Bigjpg alternative for you to upscale images 4k or even more. Vance AI Image Enlarger is a web-based tool that uses deep learning technology to upscale images while maintaining high-quality results.
The tool is capable of Image Upscale 4k and even more. Vance AI Image Enlarger is also powered by AI and can serve as the best Bigjpg alternative for you to upscale images to 4k or even more. The neural network it adopts is a special algorithm adjusted specifically for the image’s lines and colors.
- Features: AI upscaling (8x) with auto-detect mode; Generates new details, textures; Batch processing; Free trial, credits; Requires registration, email verification; Limited free credits per month.
- Pricing: Free (up to 5 images per month), paid (from $9.90 per month)
Waifu2x-Extension-GUI

Waifu2x-Extension-GUI is an AI image upscaler that allows users to increase the resolution of their images without losing quality. It is an open-source image processing tool that uses deep convolutional neural networks to upscale images while maintaining high-quality results. The tool is capable of upscaling images by 2x ,4x without losing quality.
The neural network it adopts is a special algorithm adjusted specifically for the image’s lines and colors. This allows the images to be enlarged without losing quality. Waifu2x-Extension-GUI intelligently reduces noise and serration in images, which allows the images to be enlarged without losing quality.
- Features: AI upscaling (8x) with modes; Supports a wide range of features, languages, formats; Requires installation, configuration; Limited free credits; Various limitations and capabilities
- Pricing: Free (up to 10 images or videos per day), paid (from $19.99 per month)
Remini

Remini is an AI image upscaler that allows users to increase the resolution of their images without losing quality. It is an app that uses deep learning technology to enhance the quality of images. The app is capable of restoring old photos and enhancing low-quality images.
The neural network it adopts is a special algorithm adjusted specifically for the image’s lines and colors. This allows the images to be enlarged without losing quality. Remini intelligently reduces noise and serration in images, which allows the images to be enlarged without losing quality.
- Features: AI upscaling (4x) with auto-detect mode; Enhances faces, portraits; No registration required; Free trial, credits; Requires installation, internet connection; Limited free credits per day.
- Pricing: Free (up to 3 images per day), paid (from $4.99 per month)
Topaz Gigapixel AI

Topaz Gigapixel AI is an AI image upscaler that allows users to increase the resolution of their images without losing quality. It is a standalone application that uses deep learning technology to upscale images while maintaining high-quality results. The tool is capable of upscaling images up to 600% without losing quality.
The neural network it adopts is a special algorithm adjusted specifically for the image’s lines and colors. This allows the images to be enlarged without losing quality. Topaz Gigapixel AI intelligently reduces noise and serration in images, which allows the images to be enlarged without losing quality.
- Features: AI upscaling (6x) with modes; Generates realistic, natural results; Free trial, updates; One-time payment option; Requires installation, internet connection; High-end hardware required.
- Pricing: Free trial (30 days), paid ($99.99 one-time payment or $9.99 per month)
Benefits of Using AI Image Upscaler Online
Image upscaling enhances resolution and quality of an image. Resolution refers to the number of pixels that make up an image, while quality refers to the clarity, realism of an image. Higher resolution and quality lead to clearer, sharper images. Yet, it’s complex, involving new pixel addition that must match original context.
- Improving old or low-quality photos that have been scanned, compressed, or cropped.
- Enhancing details and textures in digital art or design projects that require high-resolution images.
- Enlarging images for printing or displaying on large screens without losing any details or quality
- Restoring or colorizing historical or vintage images that have been damaged or faded over time.
- Creating realistic or stylized effects in images that require high-quality textures and details.
Frequently Asked Questions
What are Some Applications of Image Upscaling?
Image upscaling enhances photos for printing, art, vintage restoration, and more by adding details and size.
How do AI Image Upscaler Work?
AI upscaler use neural networks to analyze and enhance images, learning from data to generate higher-resolution results.
What are Some Factors to Consider When Choosing an AI Image Upscaler?
When selecting an AI image upscaler, consider output quality, speed, compatibility, security, ease of use, customization, availability, and cost.
What are Some Limitations or Challenges of AI Image upscaling?
AI upscaling limitations include differing user expectations, persistent artifacts, post-processing needs, increased storage, and bandwidth usage.
What are Some Tips or Best Practices for using AI Image Upscaler?
Use AI upscaling effectively: pick a suitable tool, use high-quality input, adjust settings, compare outputs, save/download appropriately.
Is it possible to Upscale Image to 4K with AI?
Yes, you can use Gigapixel AI, an amazing tool that uses advanced neural networks to analyze and improve every pixel of your images, giving you high-quality 4K visuals that are crisp and clear.
Conclusion
Image upscaling enhances image quality, but methods vary in effectiveness. Some create poor, distorted results. AI image upscaler, using deep learning and neural networks, excel. They analyze input images, generate higher-resolution outputs, handle complexity, preserve details, and produce sharper, natural-looking images.
This article covers image upscaling and its benefits, favoring AI image upscaler. It lists the top 10 free online tools with descriptions, pros, cons, and formats. The comparison table simplifies choices. Give these tools a try to witness AI image upscaler’ remarkable image enhancement.
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