Upscayl is an AI-powered image upscaling platform designed to enlarge low-resolution images while improving their perceived detail and overall quality.
Its biggest attraction is Upscayl Desktop, a completely free and open-source application available for Windows, macOS and Linux.
Unlike many online AI image enhancers, the desktop version processes images locally on the user’s computer. Images do not need to be uploaded to a remote server for ordinary desktop upscaling, making it particularly attractive to users who value privacy or frequently process large numbers of images.
Upscayl uses AI models based on technologies such as Real-ESRGAN and NCNN Vulkan. The models analyze low-resolution pixels and predict additional visual details while increasing image resolution.
Users can select from several AI models depending on the type of image being processed. Custom models can also be added.
Upscayl Desktop supports batch processing, allowing multiple images to be enhanced in a single operation. Users can also use Double Upscayl to process images twice when greater enlargement is required.
The broader Upscayl platform now also includes Upscayl Cloud.
Cloud removes the desktop application’s hardware requirements because processing occurs remotely. It works through a web browser on computers, phones and tablets and adds capabilities such as larger-resolution processing, face enhancement, AI image generation, editing and cloud storage.
The result is a two-part offering: a powerful free open-source desktop upscaler for local processing and a commercial cloud platform for users who want additional capabilities or do not have suitable graphics hardware.
Features
AI Image Upscaling
Upscayl uses artificial intelligence to increase the resolution of low-resolution images.
Rather than simply stretching pixels, AI models attempt to reconstruct and enhance details during enlargement.
Up to 16x Upscaling
The current Upscayl platform advertises AI-powered image upscaling up to 16x.
This can be useful when preparing smaller images for larger displays, printing or creative projects.
Free Desktop Application
Upscayl Desktop is completely free.
Users can download it and continue using it without paying a subscription.
Open-Source Software
Upscayl’s source code is publicly available.
The desktop project is distributed under the AGPL-3.0 license.
This makes the software particularly attractive to open-source users and developers.
Local Image Processing
Upscayl Desktop performs image processing on the user’s own computer.
An internet connection is not required for normal local processing after the software and necessary resources have been installed.
Multiple AI Models
Users can choose between several AI models.
Different models may perform better with photographs, digital artwork, illustrations or other image types.
Custom AI Models
Advanced users can add compatible custom models.
Upscayl also maintains resources for additional community models.
Batch Upscayl
Multiple images can be processed together.
This is useful for photographers, designers and ecommerce businesses working with large collections of images.
Double Upscayl
Users can process an image twice when they need additional enlargement.
However, additional processing does not necessarily mean that genuinely missing original detail can always be recovered.
Image Sharpening
Upscayl can improve the apparent sharpness and detail of suitable low-resolution images.
Color Accuracy
The platform includes functionality designed to preserve colors and details, including workflows where images are intended for printing.
Custom Output Resolution
Users can control output and enlargement settings according to their requirements.
Customizable Interface
Upscayl Desktop provides customization options for the application and processing workflow.
Cross-Platform Support
Upscayl Desktop supports:
Windows
macOS
Linux
Windows Support
Current desktop documentation supports Windows 10 and later.
macOS Support
Upscayl supports modern versions of macOS, with the official installation documentation specifying macOS 12 and later.
Linux Support
Linux users have access to multiple distribution formats, including options such as AppImage and distribution-specific packages.
Clipboard Images
Recent desktop functionality allows users to paste supported clipboard images into Upscayl for processing.
Multilingual Interface
Upscayl provides interface support for multiple languages.
CLI
A command-line option is available through Upscayl’s upscayl-ncnn project.
This can be useful for developers and automated image-processing workflows.
Upscayl Cloud
Upscayl Cloud extends the desktop experience with browser-based processing.
Browser-Based Upscaling
Users can process images directly through a web browser.
No desktop installation is necessary.
Mobile and Tablet Access
Because Cloud runs through the browser, it can be accessed from phones and tablets as well as computers.
No GPU Required
Cloud processing takes place on remote infrastructure.
Users therefore do not need a Vulkan-compatible graphics card.
High-Resolution Processing
Paid Cloud plans support very large output images.
The Pro plan currently supports images up to 256 megapixels, while qualifying Business configurations can support up to 512 megapixels.
Face Enhancement
Cloud includes AI-powered face enhancement.
This can improve facial details in suitable photographs.
Detail Recovery
AI processing attempts to recover or reconstruct additional visual detail from lower-quality source images.
AI Image Editing
The Cloud platform includes smart image-editing functionality in addition to upscaling.
Batch Cloud Processing
Multiple images can be processed through supported batch workflows.
AI Image Generation
Upscayl Cloud can generate new images from written descriptions.
Multiple artistic styles are available.
Cloud Storage
Paid Cloud subscriptions include online storage so users can access processed files from different devices.
Commercial AI Models
Cloud provides access to additional commercial models beyond the open-source desktop experience.
More Image Formats
The Cloud service supports additional image-processing options and formats compared with the basic desktop workflow.
How It Works
For Upscayl Desktop:
- Download Upscayl for Windows, macOS or Linux.
- Install and open the application.
- Select the image you want to enhance.
- Choose the preferred AI upscaling model.
- Configure the enlargement or output settings.
- Select the output location.
- Start the upscaling process.
- Upscayl processes the image locally using the computer’s graphics hardware.
- Compare the enhanced image with the original.
- Save the final high-resolution version.
For multiple photographs, users can choose Batch Upscayl and process several files together.
Users without suitable graphics hardware can instead use Upscayl Cloud through their web browser.
Use Cases
Old Photographs
Upscayl can increase the resolution and improve the appearance of older digital photographs.
Low-Resolution Images
Small or pixelated images can be enlarged for modern displays and other applications.
Photography
Photographers can enlarge suitable images before printing or publishing them.
Digital Art
Artists can upscale illustrations and digital artwork for larger output sizes.
Anime and Illustrations
Different AI models can be tested on anime, drawings and stylized artwork.
Ecommerce
Online sellers can improve the resolution of product photographs for websites and marketplaces.
Social Media
Creators can improve smaller images before publishing them on social platforms.
Printing
Upscaling can prepare smaller digital images for larger print dimensions.
Website Images
Designers can improve older low-resolution visual assets before using them in modern websites.
Batch Image Processing
Businesses and creators with large image collections can process multiple files together.
Private Images
Local desktop processing can be useful when users do not want to upload photographs to a cloud image-processing service.
Developers
Open-source code, custom models and command-line functionality make Upscayl useful for technical users.
Pricing
Upscayl has two distinct pricing approaches.
Upscayl Desktop
Free
Upscayl Desktop is completely free and open source.
Users can download it and process images locally without purchasing a subscription.
It includes:
AI image upscaling
Multiple AI models
Local processing
Batch upscaling
Custom models
Customizable settings
Windows, macOS and Linux support
There are no ordinary per-image limits imposed by the desktop application.
Upscayl Cloud Free Trial
$0
The current Cloud trial includes:
10 credits
Users need to log in and complete the trial application.
Upscayl Cloud Pro
Pricing varies according to the number of monthly credits selected.
At the currently displayed 300-credit level, Pro costs:
$24.99 per month
Includes:
300 credits per month
Credit rollover
Priority support
6 months of storage
Upscaling up to 256MP
AI image generation
Access to new features and models
The pricing interface also provides other credit levels, including 100, 500, 1,000, 2,500 and 5,000 credits.
Monthly and annual billing options are available, with the website advertising savings of up to 40% on annual plans.
Business
Business pricing depends on the selected credit level.
Business capabilities can include:
Credit rollover
Priority support
6 months of storage
Upscaling up to 512MP
AI image generation
New models and features
Custom
Custom pricing
Designed for organizations requiring custom credit quantities and support arrangements.
It can include:
Custom credit allowances
Priority email and chat support
AI image generation
Unlimited storage
Access to new features and models
Strengths
Desktop application is completely free.
Open-source software.
No subscription required for desktop upscaling.
Available for Windows, macOS and Linux.
Processes images locally.
Internet connection is not required for normal desktop processing.
Useful for privacy-conscious users.
AI-powered enlargement up to 16x.
Several AI models are available.
Supports custom models.
Batch image processing.
Double Upscayl functionality.
Customizable output settings.
Suitable for photographs and digital artwork.
Cloud version works on computers, phones and tablets.
Cloud eliminates local GPU requirements.
Cloud provides face enhancement.
Cloud includes AI image editing.
AI image generation is available.
High-resolution Cloud processing supports very large images.
Free Cloud trial is available.
Credit rollover is available on paid Cloud plans.
Large open-source community.
Developers can inspect and contribute to the code.
Command-line functionality is available.
Drawbacks
The desktop version generally requires compatible graphics hardware.
Upscayl’s AI backend relies heavily on Vulkan compatibility.
Many integrated GPUs may not work correctly.
Hardware requirements can therefore make the desktop application unsuitable for some older or low-powered computers.
AI upscaling cannot recreate every detail that was absent from the original photograph.
Upscayl specifically notes that it is not designed to fix severely out-of-focus photographs.
A completely blurred photograph will not necessarily become sharp simply by increasing its resolution.
Different models can produce different results, so users may need to experiment.
Large enlargement factors can introduce artificial-looking details.
High-resolution images can require significant processing time and GPU resources on desktop computers.
Cloud processing requires credits.
The free Cloud trial provides only 10 credits.
Some advanced functionality is available through Cloud rather than the completely free desktop version.
Users requiring detailed manual photo retouching will still need dedicated software such as Photoshop or another professional image editor.
Privacy
One of Upscayl Desktop’s strongest privacy advantages is local processing.
Desktop images are processed on the user’s own computer rather than being uploaded to Upscayl’s servers for ordinary upscaling.
This can be particularly valuable for private photographs, confidential creative assets and business imagery.
Upscayl Cloud is different because images must be transferred to remote infrastructure for processing.
Users working with confidential material should therefore review the current privacy terms before using Cloud.
For users whose primary concern is keeping source images on their own machine, the open-source desktop version is the more appropriate option.
Comparison with Other Platforms
Upscayl competes with AI image enhancement tools such as Topaz Gigapixel, Let’s Enhance and numerous browser-based AI upscalers.
Its strongest differentiator is its desktop model.
Many AI upscaling services charge per image or require an ongoing subscription. Upscayl Desktop is free and open source and allows unlimited local processing according to the capabilities of the user’s hardware.
Compared with cloud-only upscalers, local processing also offers greater privacy because photographs do not need to leave the computer.
Compared with professional commercial tools such as Topaz Gigapixel, Upscayl is significantly more accessible because its desktop version has no purchase price. Commercial applications may, however, provide additional specialized models, controls or professional workflows.
Upscayl now also competes more directly with online services through Upscayl Cloud. Cloud adds browser access, face enhancement, very large output resolutions, image editing, AI generation and storage.
The combination gives users a useful choice: free local processing when they have compatible hardware or paid cloud processing when they want convenience and additional capabilities.
Customer Reviews and Testimonials
Upscayl presents user feedback on its official website.
The displayed testimonials particularly praise the combination of free access and image-upscaling quality.
These testimonials are selected and published by Upscayl itself and should therefore be treated as company-presented feedback rather than independently verified reviews.
A stronger indicator of community interest is Upscayl’s substantial open-source presence. Its official GitHub repository has attracted tens of thousands of stars and thousands of forks, indicating significant developer and open-source-community attention.
Because the desktop application is free, users can evaluate its results directly with their own images without purchasing a plan.
Conclusion
Upscayl is one of the more interesting AI image upscalers because its core desktop product is both free and open source.
Windows, macOS and Linux users can install the application, choose from multiple AI models and enlarge low-resolution images directly on their own computers. Batch processing, custom models and local processing make it particularly attractive to photographers, designers, artists and privacy-conscious users.
Its primary desktop limitation is hardware compatibility. Upscayl relies on AI processing technologies that generally require a Vulkan-compatible GPU, and severely blurred or out-of-focus photographs cannot simply be restored through upscaling.
Upscayl Cloud addresses the hardware limitation by performing processing remotely. It also adds face enhancement, image editing, AI image generation, larger resolutions and cloud storage. The Cloud service has a 10-credit free trial, while the current 300-credit Pro configuration costs $24.99 per month.
Overall, Upscayl is a strong choice for users looking for a genuinely free AI image upscaler, particularly those who value open-source software and local image processing. Users needing more powerful cloud-based capabilities can move to Upscayl Cloud without abandoning the same ecosystem
