WebP htaccess optimization

# Check if Accept header is image/webp, if an image is requested in "classic" folder with a classic format, and check if the corresponding webp image exists. If yes, rewrite the requested classic image URI to the WebP image URI.

RewriteCond %{HTTP_ACCEPT} image/webp
RewriteCond %{REQUEST_FILENAME} (.*)images/classic/(.*)\.(png|jpg|gif)$
RewriteCond %1images/webp/%2\.webp -f
RewriteRule .* images/webp/%2.webp [L]