Add Additional Mime Types in functions.php

add_filter(‘upload_mimes’,’add_custom_mime_types’);
function add_custom_mime_types($mimes){
return array_merge($mimes,array (
‘eps’ => ‘application/eps’,
‘jpg’ => ‘image/jpg’,
‘png’ => ‘image/png’,
‘jpeg’ => ‘image/jpeg’,
‘pdf’ => ‘application/pdf’,
‘doc’ => ‘application/doc’,
‘docx’ => ‘application/vnd.openxmlformats-officedocument.wordprocessingml.document’,
‘gif’ => ‘image/gif’,
));
}

List Of Mime Types To Use