Ant Design Upload component rescales images to 200x200 [React] - reactjs

Question

I met an issue at Ant Design <Upload /> component. When I upload an image it sends two Img typed requests at the Network console. First contains my orginal image (tested at 650x650 image size), second contains transformed image to 200x200. And here is my question: Why image is rescaled to lower resolution and how can I prevent that? I want to upload orignal images with transparency if that is required.
In my case Upload component is used to upload single image. Component is placed on modal component that is why I prepared dummyRequest.
const UploadImage = ({
defaultValue,
maxFilesAmount,
}: IUploadImageProps<any>): JSX.Element => {
const [fileList, setFileList] = useState<IUploadFile<any>[]>(
defaultValue ?? []
)
const onChange = useCallback(
(info: IUploadChangeParam<IUploadFile<unknown>>): void => {
setFileList(info.fileList)
},
[setFileList]
)
const onPreview = useCallback(async (file: IUploadFile): Promise<void> => {
let src: string | undefined = file?.url ?? file?.thumbUrl ?? ''
if (!_.isNull(src)) {
src = await convertImportImageToBase64(src)
}
const image: HTMLImageElement = new Image()
const imgWindow: Window | null = window.open(src)
image.src = src
imgWindow?.document.write(image.outerHTML)
}, [])
const dummyRequest = useCallback(({ onSuccess }: IUploadRequestOption) => {
setTimeout(() => {
//#ts-ignore
onSuccess('ok')
}, 0)
}, [])
const beforeUpload = useCallback((): false => {
//Required to ignore Ant Desing default converting uploaded image
//For example that removes transparency from png files
return false
}, [])
return (
<Upload
accept={'.jpg, .jpeg, .png'}
listType={'picture-card'}
beforeUpload={beforeUpload}
fileList={fileList}
onChange={onChange}
onPreview={onPreview}
customRequest={dummyRequest}
>
{_.size(fileList) < (maxFilesAmount ?? 1) && 'Upload'}
</Upload>
)
}
At the start I had also a problem with losing transparency at .png images. Image still was defined as png but transparent background got a white color. Used beforeUpload fix that, I not sure why but okej :).
What can I do more to fix this issue? Thanks in advance.