Side by side
Upscayl vs Viesus enhancing PDFs and images
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
Enhance images with free, open-source AI upscaling.
Enhancing and Upscaling for images and PDFs
Primary task
Image upscaling
Image upscaling
Pricing
Free Trial · Trial; then from $9.99
Free Trial · Trial; then from $10/mo
Pricing details
Free + from $9.99
Free + from $10/mo
Billing cycle
One-time
Monthly
API access
Not documented
Listed as available
Platforms
Web, macOS
Web
Integrations
GitHub
Not documented
Source rating
4.3 / 5 · 13 ratings
3.9 / 5 · 9 ratings
Catalog views
23k
15k
Estimated monthly traffic
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Catalog imported
30 Aug 2026
30 Aug 2026
Listed strengths
- Free and open source
- Preserves details when upscaling
- Multi-platform compatibility
- User-friendly interface
- Allows varied upscaling factors
- Cloud-based solution
- Fast processing speed
- Automated operations
- Packed with features
- Ideal for bulk enhancement
Listed limitations
- Requires manual installation
- Dependent on user donations
- No auto-update feature
- Limited upscaling options
- No batch processing feature
- Doesn't work offline
- Might introduce unwanted changes
- No free tier available
- Potentially excessive feature complexity
- Upscaling limit not specified