Upscayl
by Upscayl
Free and open-source AI image upscaler backed by Y-Combinator. Desktop app with fully local processing for maximum privacy — no uploads, no cloud dependency. Up to 16x upscaling with multiple AI models including anime and photo modes. Consensus best free option across 3 of 4 benchmark articles. Paid cloud tier available with credit system for users who want server-side processing.
Tool Analysis
VerifiedFree
Yes
Windows, macOS, Linux, Web
JPG, PNG, WebP
Yes
image upscaler
PrimaryStrengths
Weaknesses
Feature Ratings
Universal consensus as best free upscaler across articles and public discussion.
Local processing, no uploads, privacy-first.
Y-Combinator backed, transparent development.
Pain Points
Results vary by model and image type. Not always on par with paid alternatives.
image upscaling
Strengths
Weaknesses
Feature Ratings
Free with no limits and multiple AI models praised in articles
Pain Points
Fewer format options than commercial alternatives
Use Cases & Performance
Free image upscaling with privacy
100% free, local processing, open source, no watermarks.
Anime/illustration upscaling
Dedicated anime models, original heritage as anime upscaler.
Batch API upscaling
No API. Desktop or paid cloud tier only.
Free unlimited desktop upscaling
Free open-source with multiple AI models.
Privacy-conscious users
Local processing keeps images off servers.
Cross-platform desktop users
Native apps for Windows Mac and Linux.
Web-based users with no install capability
Desktop only — use VanceAI or iloveimg web.
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