The solutions are found from Roboflow Discussion

I have created with NMS solution from the discussion which provide without NMS solution.

with NMS Web implimentation in JS/TS

Try it -> https://yolo11s-seg-web-onnx.vercel.app

Give it a star ⭐ -> https://github.com/pranta-barua007/yolo11s-seg-web-onnx