JPEG is best for photos
JPEG is designed for photographic images and is usually the better choice when file size matters more than preserving every pixel. It handles gradients and natural textures well, and it is widely supported across browsers, editors, and upload forms.
PNG is better for graphics and transparency
PNG keeps more detail and supports alpha transparency, so it is often the right format for logos, screenshots, UI graphics, icons, and any image that needs transparent edges. PNG files often stay larger than JPEG, especially for photos.
