WebP
WebP lossless images are 26% smaller in size compared to PNGs. WebP lossy images are 25-34% smaller than comparable JPEG images at equivalent SSIM quality index.
wget https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-1.3.2-mac-arm64.tar.gz
tar -zxvf libwebp-1.3.2-mac-arm64.tar.gz
cwebp -q 80 thinking.png -o thinking.webp
(base) ➜ webp ls -lh
total 568
-rw-r--r--@ 1 riguz staff 249K 10 30 18:17 thinking.png
-rw-r--r-- 1 riguz staff 32K 10 30 18:19 thinking.webp
see:
cwebp -q 80 image.png -o image.webp
dwebp image.webp -o image.png
gif2webp ..