Best Gigapixel AI Alternatives for Upscaling Images 2025
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Are you looking for a powerful way to enhance your images? With the rise of digital content, image quality has never been more important. Topaz Gigapixel AI has become a go-to tool for many, offering impressive features for these tasks. Powered by advanced AI technology, it can efficiently upscale images by analyzing and enhancing details.
However, are there some good alternatives to Gigapixel AI? That might be necessary if you are looking for different features, price tags, or platforms. In this article, we'll list some of the best Gigapixel AI alternatives, providing insights into AI image upscalers that might suit your needs better.
1. Aiarty Image Enhancer
Looking for powerful Gigapixel AI alternatives that deliver stunning results without the complexity?Aiarty Image Enhancer offers a robust 4-in-1 AI enhancement system—Denoise, Deblur, More Details, and Upscale—designed to improve and restore image quality automatically. Powered by advanced AI models trained on diverse image types, it allows users to boost resolution up to 8x or 32K on Windows and up to 16K on macOS with crisp details.
Unlike Gigapixel upscaling, Aiarty combines speed, ease of use, and high performance in one sleek package. It’s optimized for both NVIDIA/AMD/Intel GPUs and CPUs, ensuring smooth performance even on lower-spec systems. The intuitive interface requires no editing skills, and with its batch processing support for 1000+ images, it’s a true time-saver for professionals and enthusiasts alike.
Whether you're seeking a simpler, faster, or more efficient alternative to Topaz Gigapixel AI, Aiarty Image Enhancer stands out as a worthy contender—especially when bulk processing, ultra-high resolutions, and AI precision matter most.
To showcase real-world performance, we upscaled a low-resolution 256×384 anime-style image 4x using both Aiarty Image Enhancer and Topaz Gigapixel AI.
Aiarty delivers a more natural and visually coherent result, especially in fine details such as the eyes, hair, and ear contours. In contrast, Gigapixel AI introduces visible artifacts and pixelation around these areas, giving the upscale a somewhat artificial look. The overall feel of the Gigapixel result appears less consistent, with certain textures looking overly sharpened or digitally processed.
- Denoise, deblur, add details, upscale in 1 click
- Upscale images by up to 800% to 32K
- Batch enhancing 1000+ images simultaneously at high speed
- Optimized for NVIDIA, AMD, and Intel GPU acceleration
- Lack of support for Linux systems
Upscale images to the same quality without costing $99+$64/yr renewal - Aiarty Image Enhancer.
Enlarge images up to 32K, remove noise, blur, pixelation, compression artifacts, reconstruct details. Fast, easy.
2. Imglarger
Imglarger is an effective online Gigapixel AI alternative designed to enhance and enlarge images without losing quality. Its primary focus is on providing a simple and efficient solution for users who need to upscale their images for various purposes, whether for social media, websites, or printing.
One of the standout features of Imglarger is its AI-powered image enhancement technology. This ai resolution enhancer allows you to enlarge images by up to 8x with a free account. You can upload one JPG or PNG file up to 1MB or 1200px at a time. The 800% upscaling option requires paid plans from $4.9 per month. Besides enlarging resolution, Imglarger also offers basic image editing tools like cropping, stickers, etc.
While ImgLarger is often mentioned as a free Gigapixel AI alternative, its performance under higher upscale settings—such as 4x enlargement—reveals some limitations. Compared to Gigapixel AI, the upscaled result from ImgLarger shows heavy pixelation and a lack of refined detail. If you're considering this Gigapixel alternative, it’s a good idea to test the output quality first to see if it meets your expectations— there is a free tier.
- Easy-to-use interface suitable for novices
- No software installation needed
- Suitable for occasional use of a small number of images
- Only support JPG and PNG files
- File size limits and no batch processing for free accounts
- Slow upscaling speed (took 20s to upscale 400% a 640x427px photo in our test)
3. Upscayl
Upscayl is a popular free open-source AI image upscaler that's often mentioned as a Gigapixel AI alternative, especially among users who prefer a free and transparent solution. It uses advanced open-source AI models like Real-ESRGAN to upscale low-resolution images by 2x, 4x, or 16x with enhanced clarity and sharpness.
Like Gigapixel, this alternative also comes with various pre-trained AI models (e.g., General Photo, Digital Art, Sharpen) that you can choose from, each optimized for different image types and desired outcomes. More than that, users can also add custom models.
Compared to Gigapixel AI, Upscayl performs impressively well on general images and digital art, particularly when it comes to sharpening lines and enhancing visuals with clean contours and simple textures. The upscaled results often look natural and aesthetically pleasing, making it a strong choice for AI-generated artwork, icons, logos, and illustrations. However, when it comes to complex textures or highly detailed areas, Upscayl can occasionally introduce over-smoothing or minor rendering artifacts, which may slightly impact the overall clarity in those regions.
Despite these limitations, Upscayl remains a compelling open-source Gigapixel AI alternative for users seeking high-quality results without the premium price tag.
- Free and open-source.
- Good results for general images & digital art.
- Upscale images by 4x locally with AI.
- Less fine-tuning options compared to Gigapixel AI.
- Adding AI models is a little bit complicated.
- Occasional over-sharpening or artifacting in detailed textures.
4. Icons8 Upscaler
Icons8 Upscaler is a user-friendly online ai photo enlarger. Designed for content creators and designers, it's a great Gigapixel AI alternative for those looking for simplicity and efficiency. With Icons8, you can upscale images and enhance quality without much hassle. It supports JPG, PNG, and WebP files. The maximum output resolution is 7680x7680px. An added bonus is its ability to batch process 500 images at a time.
Free accounts have 3 demo upscales that can enlarge images by 200% with watermarks. To upscale 4x and remove the watermark, you'll need to get a subscription from $9 per month (100 images) or $0.20 per image.
- User-friendly interface that is accessible for beginners
- Work for batches of images, best with images smaller than 3000 x 3000 pixels
- Support JPG, PNG, and WebP formats
- Limited free usage (only 3 demo 2x upscales) may restrict some users
- Watermark on outputs
- Fewer features compared to some competitors
5. Pixelcut Upscale
Pixelcut Upscale is a free online tool that enhances image resolution quickly. You can upload images such as JPG, PNG, or HEIC to increase their quality up to 4x and 4K resolution with a Pixelcut Pro account. Free users get 2x the original size only. And unfortunately, even 2x upscaling didn't work as well as expected in our tests. The edges of the image are not as sharp as the output of other Gigapixel AI alternatives.
- Simple and intuitive interface for easy navigation
- No hassle of complicated software
- Available on iPhone and Android
- Limited to 4x image enlargement and 4K max output
- Slower processing times
- Not very satisfactory upscaling results
6. ImgUpscaler
ImgUpscaler is a handy tool to upscale and enhance JPG and PNG images. It supports image sizes up to 5MB or 1000 pixels. Non-login users can choose between 200% and 400% upscaling for a maximum output of 4000x4000 for free. This alternative to Gigapixel AI stands out with its specialized algorithm optimized for Anime and Cartoon images, which is uncommon among online tools. And the processing speed is relatively fast.
However, please note that the program introduces some artifacts while upscaling the image resolution, especially in the limbs. This makes the output results a bit unnatural.
- Optimized for Anime and Cartoon images
- 5 images for batch processing currently
- Relatively fast processing speed among other Gigapixel AI free alternatives
- Available on iPhone and Android
- Only support JPG and PNG files
- Additional artifacts in the output results
7. Vance AI
Vance AI is an excellent choice to upres images using advanced AI technology. Powered by Deep Convolutional Neural Networks (DCNN), this Gigapixel AI alternative can enlarge images up to 40x with the desktop version. Even the online version allows you to upscale images up to 8x while preserving intricate details and textures.
For those who manage large numbers of images, Vance AI supports batch processing. This feature can significantly increase your productivity by speeding up the workflow.
- Different AI models for high-quality output
- Support batch processing
- Comprehensive editing tools
- Only support JPG, PNG, and JPEG formats
- Watermark on the output results with free plans
8. R-ESRGAN
Looking to upscale an AI image? R-ESRGAN is the best upscaler for Stable Diffusion and other AI image generators. It's an advanced image upscaling tool designed for both images and videos. This Gigapixel AI alternative is open source and especially popular among developers and tech-savvy users who want to integrate high-quality upscaling into their projects.
The tool offers flexibility, allowing you to run it on Windows, Linux, or MacOS without needing additional software environments like CUDA. It can process images in various formats, such as JPG, PNG, and WEBP, making it versatile for different use cases. Additionally, R-ESRGAN includes a feature for enhancing facial details, which can be particularly useful for upscaling portrait images. You can set various options when processing images, including tile size, model path, and output format.
- High-quality image enhancement with accurate detail preservation
- Open-source, Gigapixel AI free alternative
- Enhance facial features
- Active community support for troubleshooting and enhancements
- Require technical expertise to set up and use for optimal results
- Performance may vary based on hardware capabilities
- May introduce slight block inconsistency
9. ON1 Resize
ON1 Resize AI is a professional image resizing tool that utilizes AI to enlarge images without losing quality. You can use it as an alternative to Gigapixel AI to produce high-resolution images for prints, online galleries, or marketing materials.
With ON1 Resize AI, you can enhance small faces in photos using a special face recovery feature. This is particularly useful for improving old group shots or when zooming into a specific person in a photo. You can adjust how much enhancement is applied to ensure the best look for your images. The software also integrates effectively with popular editing programs such as Adobe Lightroom, Photoshop, and Capture One. This makes it easier for you to include it in your existing workflow.
- High-quality image enlargement
- Effective face recovery feature
- Compatible with major editing software
- Require a powerful system for best performance
- May be complex for beginners
- Higher price tag
10. Topaz Photo AI
Topaz Photo AI vs Gigapixel is not a new topic in the list of AI image enhancers. We see people keep asking whether they should get Topaz Photo AI or Gigapixel AI. Compared to Gigapixel AI, Photo AI includes additional features like noise reduction and sharpening.
A key feature of Topaz Photo AI is its ability to automatically upscale images by up to 6x, using sophisticated AI algorithms to analyze and reconstruct image details. This results in clear, sharp images even when enlarged. Besides, it shines in enhancing human faces and text with specialized models to achieve natural improvements without introducing distortions.
- Excellent for face and text improvement
- User-friendly
- Effective at detail preservation
- Work as a plugin for tight workflow integration
- Support multiple image formats for flexibility
- Steep learning curve for novice users
- Costly for some users
- Limited to those interested in specific improvements
11. Luminar Neo
Luminar Neo is an innovative Gigapixel AI alternatives that utilizes AI technology to enhance images with ease. It's tailored for photographers and creatives who want to improve their photos quickly while maintaining high quality. You can benefit from its AI capabilities to replace skies, sharpen portraits, and enhance resolution of course effortlessly.
The software can enlarge your photo up to 6X without significant quality loss, so you can zoom in on a subject that might be really far away. It supports various image formats, including raw and non-raw files. Additionally, Luminar Neo offers a variety of creative tools, including portrait enhancement and background removal, making it a versatile choice for diverse projects.
- AI-powered enhancements for quick and effective editing
- Versatile features beyond upscaling, like portrait and background tools
- Support multiple file formats for flexibility
- Work as a standalone app or a plugin for Photoshop, Lightroom, and Apple Photos
- Some advanced features may take time to master
- Slightly softer output compared to other options
12. Super Resolution Photoshop
Super Resolution in Photoshop can be used as a Gigapixel AI alternatives. It works through the Camera Raw tool (not a separate application.) When you open the file, the AI model analyzes the image to reconstruct details. It doubles the linear resolution of the original image, resulting in a fourfold increase in total pixel count. This feature supports the same file type as Raw Details, plus additional file types such as JPEG and TIFF. If you have old or low-resolution photos, Super Resolution can transform them into high-quality and print-ready pieces.
- High-quality image enlargement with detail retention
- Integrate well with other Adobe tools
- Support multiple image formats for flexibility
- Require a subscription to Adobe Creative Cloud
- Require more processing power
Criteria for Choosing a Gigapixel AI Alternative
When looking for a Gigapixel AI alternative, focus on key criteria like output quality, performance speed, user interface, and cost. Each of these factors can heavily influence your overall satisfaction with an image upscaling tool.
1. Image Upscaling Quality
The most important factor is how well the tool enhances images. A good Gigapixel AI alternative should produce clear, detailed results without introducing artifacts, over-smoothing, or edge distortion. Advanced AI models trained on diverse image datasets (portraits, AI art, landscapes, etc.) often yield more professional results.
2. Maximum Enlargement Capabilities
Different tools offer different upscaling limits. While some alternatives to Gigapixel AI only go up to 2x or 4x, the best ones allow for 6x, 8x, or even up to 32x enlargement, especially useful for large prints, design work, or enhancing AI-generated art.
3. Performance and Speed
Performance matters, especially when batch processing high-resolution images. A great Gigapixel alternative should provide a good balance between rendering speed and output quality, while being optimized for your hardware—whether you’re using a GPU-accelerated PC or a modest laptop.
4. User Interface and Experience
An intuitive, clutter-free interface can save hours. Look for features like drag-and-drop support, preset enhancement modes, and real-time previews. A good Gigapixel AI replacement should feel accessible to beginners, yet offer customization for advanced users.
5. Batch Processing Support
If you frequently upscale multiple images, batch processing is a must-have. Some Gigapixel AI alternatives allow you to enhance hundreds or even thousands of photos simultaneously, dramatically boosting productivity.
6. Price, Licensing, and Free Options
Gigapixel AI is a premium tool—but many free Gigapixel AI alternatives offer comparable performance for light to moderate use. Compare one-time purchase options, subscription plans, and freemium models to find one that fits your budget. Also, check the licensing terms for commercial use or team collaboration.
Conclusion
In summary, there are several strong Gigapixel AI alternatives, each offering unique features and benefits. Among these, Aiarty Image Enhancer stands out as a top choice. With its advanced AI technology, it allows you to enlarge images while maintaining quality, making it perfect for photographers and designers alike.
By choosing Aiarty Image Enhancer, you can enjoy powerful features that help bring your creative vision to life. Don't hesitate to download and try it out to experience the benefits firsthand!
- 4-in-1 AI image enhancer, denoiser, deblurer, and upscaler
- 3 AI models for any image type, incl. JPEG, PNG, RAW...
- Generative AI enhancing up to 32K(Win)/16K(Mac) with better details
- Intuitive UI with no artifacts, limitations or quality loss
- Fit different budgets with a free trial and subscription options
FAQs
Yes, Gigapixel AI offers a 30-day free trial with full feature access, though exported images include watermarks. This allows testing its AI upscaling capabilities, including face recovery and 6x enlargement, before purchasing a license.
Aiarty Image Enhancer stands out as the top Gigapixel alternative, offering 4-in-1 AI enhancement (denoise, deblur, detail boosting, and upscaling) with 800% enlargement and 32K resolution support. Its batch processing, hardware optimization, and intuitive interface, making it ideal for restoring old photos or refining AI-generated artwork.
R-ESRGAN is a robust free AI upscaler leveraging open-source models to enhance images and videos. While it excels in detail preservation and anime upscaling, it requires technical expertise for installation and tuning. Casual users may find its lack of a GUI and occasional artifacts challenging compared to user-friendly options like Aiarty's trial or Imglarger's online tool.
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Brenda Peng is a seasoned editor at Digiarty Software who loves turning ordinary photos into extraordinary works of art. With years of experience behind the lens and in front of the computer, Brenda shares her passion for photography, image enhancement, and editing through easy-to-follow tutorials.
