Resource requirements
Local tracers
| Tracer | Min RAM | Speed | CPU requirement |
|---|---|---|---|
isnet (default) | 2 GB | ~0.8s/image | AVX |
inspyrenet | 6 GB | ~2.8s/image | AVX |
birefnet-lite | 8 GB | ~3.6s/image | AVX |
All local tracers require ONNX Runtime with AVX CPU instructions. On non-AVX CPUs, local tracers are unavailable. Use a remote tracer instead.
Remote tracers
Remote tracers have minimal local resource requirements. The saliency model runs on the provider's GPU. OpenCV processing stays local.
Paper detection
U2-Net Portable loads at startup alongside the selected tracer. On non-AVX CPUs, paper detection falls back to OpenCV-only (no additional RAM needed).