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Upscayl

Upscayl

Open Source

Free AI image upscaling for crystal-clear photos

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Hearts Heat (0–100)
46,257 Stars AGPL-3.0 v2.15.0 May 15, 2026 Since Jul 2022 57 open issues

AI Summary

Upscayl is an open-source tool for intelligently upscaling and enhancing images using AI models. It utilizes advanced super-resolution algorithms to convert low-resolution images to higher quality without losing sharpness. The tool is designed for photographers, designers, and content creators who want to enhance their image assets retrospectively.

Pros

  • + Completely free and open-source with no hidden fees
  • + Runs locally on your computer, no internet connection or cloud upload required
  • + Supports multiple AI models and works with GPU acceleration for fast processing

Cons

  • Batch processing large quantities can be time-consuming
  • Quality varies depending on input image and selected AI model

Use Cases

  • Upscale old photos and digital images to higher resolution
  • Improve blurry or pixelated screenshots and gaming screenshots
  • Upscale archive images and scans for print publications
  • Adapt wallpapers and digital artworks for different monitor resolutions

Who is it for?

Ideal for photographers, designers, and users who want to upscale their images without privacy concerns or subscription costs.

Tags

Platform: cross-platform
Pricing: Open Source

What is Upscayl?

Upscayl enlarges images using AI without losing sharpness. The open-source project uses advanced super-resolution algorithms to calculate significantly more detailed output from low-resolution source material. The key point: all processing runs entirely locally. No cloud service, no account, no upload. Anyone with privacy concerns, or who simply wants no dependency on external servers, gets a clear alternative to web-based upscaling services here.

Core features

  • Local AI processing with GPU acceleration for faster computation times without an internet connection
  • Multiple AI models to choose from, each suited differently depending on image type and desired result
  • Batch processing for multiple images in a single run
  • Wide range of use cases: from old photos and archive scans to pixelated screenshots and digital art
  • Free and open-source, with no hidden fees or subscription model

Who is Upscayl for?

Photographers who want to prepare older digital shots for print benefit directly. Designers who need to upscale archive material or public domain scans also have a concrete use case. The tool works for gaming content and screenshots as well, though output quality depends heavily on the source material. Upscaling a photo with heavy motion blur or extreme compression will not produce miracles. Results vary noticeably depending on the model chosen.

Batch processing large numbers of images takes time. Anyone wanting to upscale hundreds of images at once should plan for an operation lasting several hours, not a five-minute background job.

Context & alternatives

Upscayl belongs to the category of desktop-native AI upscaling tools, where it competes with Topaz Gigapixel AI, which costs considerably more and runs as a paid desktop application. On the web-based side there are services such as Bigjpg or Let's Enhance, which require uploads and often come with usage restrictions. Upscayl is the only option in this category that runs locally, offers multiple models, and remains completely free. Anyone wanting two out of those three elsewhere will pay for the privilege.

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