Side by side
PixExtender vs Uncrop by Stability AI
Compare what each tool does, what it costs, and how it fits your workflow.
Designed for
Expand images to your custom size up to 4096 pixels.
Uncrop photos to any image format.
Primary task
Image expansion
Image expansion
Pricing
Free Trial · Trial; then from $8.3/mo
Freemium · Free + from $11.83/mo
Pricing details
Free + from $8.3/mo
Free + from $11.83/mo
Billing cycle
Monthly
Monthly
API access
Not documented
Not documented
Platforms
Web
Web
Integrations
Not documented
Not documented
Source rating
4.3 / 5 · 4 ratings
2.3 / 5 · 3 ratings
Catalog views
1.4k
14k
Estimated monthly traffic
—
951.4K
Catalog imported
31 Aug 2026
30 Aug 2026
Listed strengths
- Expands boundaries without quality loss
- Applies context-aware outpainting
- Adjusts lighting, texture, depth
- Seamless blend with original
- Ideal for hero banners
- Edits aspect ratio
- Image format flexibility
- Generates extended backgrounds
- Numerous upload options
- Equipped with image upscaler
Listed limitations
- Max aspect ratio 4096x4096
- Only supports JPG, JPEG, PNG, WEBP
- 20 images batch limit
- Requires Internet connection
- No off-line usage
- Inconsistent background extension
- Requires registration for use
- Can't handle complex textures
- Unreliable 'Generative Fill' tool
- Unconvincing 'People Swap' results