Allow Svg WordPress

// Wp v4.7.1 and higher
add_filter( 'wp_check_filetype_and_ext', function($data, $file, $filename, $mimes) {
 $filetype = wp_check_filetype( $filename, $mimes );
 return [
 'ext' => $filetype['ext'],
 'type' => $filetype['type'],
 'proper_filename' => $data['proper_filename']
 ];

}, 10, 4 );

function cc_mime_types( $mimes ){
 $mimes['svg'] = 'image/svg+xml';
 return $mimes;
}
add_filter( 'upload_mimes', 'cc_mime_types' );

function fix_svg() {
 echo '<style type="text/css">
 .attachment-266x266, .thumbnail img {
 width: 100% !important;
 height: auto !important;
 }
 </style>';
}
add_action( 'admin_head', 'fix_svg' );

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