Hi @Saswat_Das , please save it as SavedModel, model.save('my_model') (doc: Save and load Keras models  |  TensorFlow Core). And then follow the tfjs-converter doc to convert the SavedModel to tfjs format: tfjs/tfjs-converter at master · tensorflow/tfjs · GitHub 5
Basic cmd:
tensorflowjs_converter \
    --input_format=tf_saved_model \
    --output_format=tfjs_graph_model \
    --signature_name=serving_default \
    --saved_model_tags=serve \
    model_path/saved_model \
    new_path/web_model