# convert all images to webp
for img in *.jpeg; do cwebp -q 80 "$img" -o "${img%.jpeg}.webp"; done

# remove old jpeg files
rm *.jpeg

# installing imagemagick
brew install imagemagick

# creating folder for resized images
mkdir 512

# converting all images to telegram acceptable format
for img in *.webp; do convert "$img" -resize 512x512 "./512/${img%.webp}_512.webp"; done