AI image upscaler for enlarging photos and artwork online
Stage
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Founded
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Based in
US
HK
Pricing model
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Freemium
Pricing
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Free: 50 credits per month. Premium: $9.90/month with 500 credits per month. Business: $19.90/month with unlimited credits. All plans allow commercial use. Paid plans include batch processing of up to 8 images and 4K enhancement.
Key features
Pyramid-JiT (P-JiT) architecture with 32×32 token reduction
4× more aggressive token reduction than Linum v2
Converges in 11× fewer samples than Linum v2
2B-parameter model with frozen Qwen text encoder
Pixel-space diffusion with multi-resolution readouts
PixelREPA alignment with DINOv3-L
Curriculum learning over noise schedule
Batch processing of up to 8 images on paid plans
Comparison slider to preview results before downloading
Support for JPG, PNG, WebP, and AVIF formats
4K enhancement on paid plans
Automatic deletion of images within 24 hours
Commercial use allowed on all plans
Edit capability before downloading results
No ads on paid plans
Works with photos, artwork, and scanned pictures
What makes it different
Low-cost training: full 2B model trained for just $21K in compute
Controls baked into model training rather than post-hoc fine-tuning
Pixel-space compression without separate VAE bottleneck
Apache 2.0 open release with full model weights and code
AI generates realistic detail rather than just stretching pixels
Batch processing saves time for users with multiple images
Linum
ImgUpscaler