Hiromaru Background Remover application — AGPL-3.0-only.
Application source: app/, index.html, style.css, editor.css. No build step required.
Source documentation: source/README.md. Individual third-party licenses: licenses/.

U²-NetP — Xuebin Qin et al., Apache-2.0.
https://github.com/xuebinqin/U-2-Net
ONNX model provided by rembg:
https://github.com/danielgatis/rembg/releases/download/v0.0.0/u2netp.onnx
Exact original model SHA-256 and compressed-resource integrity: models/manifest.json.
Original model weights and fixed 320x320 inference are unchanged.
512/640 dynamic-input experiments were not shipped because of subject loss.

Original-resolution alpha refinement is an independent implementation based on
RGB guided filtering and bounded color-connected background cleanup.
Guided Image Filtering, Kaiming He et al.:
https://people.csail.mit.edu/kaiming/eccv10/index.html

ONNX Runtime Web 1.21.0-dev.20250206-d981b153d3 — Microsoft, MIT.
https://github.com/microsoft/onnxruntime/tree/d981b153d3
UPNG.js — Photopea, MIT. pako — MIT. fflate 0.8.2 — MIT.
No IMG.LY application code or IS-Net model is included in this version.