Camera EXIF (ISO, shutter, lens, GPS coords) is preserved by default during PNG → WebP when both formats support metadata. Use the privacy option to strip metadata before download if you need to share images without geolocation.
For JPG / WebP, quality 75-85 typically gets the WebP 60-80% smaller than PNG with no visible difference at normal viewing distance. For lossless WebP (PNG, TIFF), expect smaller savings — usually 5-30% via better deflate / LZW compression. WebP通常比同等的JPG小25-35%,远小于动画型GIF,自2020年以来普遍支持浏览器。
