Transform All Image Files to webp

Bash script that replaces all image files within a folder into webp files of the same size.

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assuming there is a folder uploads in the current working directory, that contains image files that need to be transcoded to webp:

find ./uploads -type f ! -name "*.webp" -exec bash -c '
    FILE="$1"
    BASE="${FILE%.*}"
    EXT="${FILE##*.}"
    BASE="${FILE%.$EXT}"
    WEBP="$BASE.webp"

    cwebp -q 80 "$FILE" -o "$WEBP"
    rm "$FILE"
' bash {} \;

note that the script skips already existing webp files and also checks to handle file names with multiple dots in them.

to get the cwebp tool on Mac OS, simply run brew install webp