JPEG at 100% quality makes very little sense - the goal is to dial it down to the lowest value where artifacts are still low enough to not notice. AVIF also has

JPEG at 100% quality makes very little sense - the goal is to dial it down to the lowest value where artifacts are still low enough to not notice. AVIF also has much better behavior in the artifact department, letting you go much lower without introducing artifacts - you simply loose detail, which is no issue in a largely smooth product photo. For reference, my own photos downscaled to 3840x2560 AVIF for sharing purposes range from 500KB to 2MB depending on how "busy" the image is. The off-camera 6000x4000 JPEG is ~7MB in comparison. I stand by my opinion that a few hundred KB per image is plenty at the required resolution for model photos in an app.