>>7884541PNG is lossless, yes, but the format is designed for graphics (aka large areas of flat colors), not photos. It's what its optimized to do. Which is why a PNG of a graphic at a large resolution still has a tiny file-size, but a photo saved as a PNG is needlessly bloated.
If you want lossless, save in webp or BMP. You know, formats that are optimized for photos.
So
>t. I don't understand the fundamental difference between jpg and pngIs still true.