we are in printing merchandise business so we have to get high quality files, so we need to disable image optimization option in the file uploader.
Got solutions just minutes later after posting , just had to remove these lines from core frappe app
frappe-bench/apps/frappe/frappe/public/js/frappe/FilePreview.vue remove these below lines
<input
type=“checkbox”
:checked=“optimize”
@change=“emit(‘toggle_optimize’)”
/>{{ __(“Optimize”) }}