Code-Snippets-Functions/Execute a function on a child site/WordPress/set-webp-image-quality.txt

// Use a quality setting of 90 for WebP images.
function filter_webp_quality( $quality, $mime_type ) {
  if ( 'image/webp' === $mime_type ) {
     return 90;
  }
  return $quality;
}
add_filter( 'wp_editor_set_quality', 'filter_webp_quality', 10, 2 );