add_filter('upload_mimes', 'dw__upload_mimes');
function dw__upload_mimes( $mimes=array() ){
$mimes['svg'] = 'image/svg+xml';
return $mimes;
}
Notes about WordPress Gutenberg themes development.
add_filter('upload_mimes', 'dw__upload_mimes');
function dw__upload_mimes( $mimes=array() ){
$mimes['svg'] = 'image/svg+xml';
return $mimes;
}