Wordpress customizations inside functions.php

Here are few tips on how to customize your Wordpress, without having to resort to plugins, just insert the following php code inside your functions.php file. I will be adding more.

Redirect inner page to outer domain:
add_action('template_redirect','redirect_from_to');
function redirect_from_to(){
  if (is_page('mypage')){
    wp_redirect('http://www.google.com',301);
    exit()
  }
}
Note: mypage must be created in order for the redirect to work.

Allow svg files to be uploaded:

function cc_mime_types($mimes){

$mimes['svg']='image/svg';

return $mimes;

}

add_filter('upload_mimes','cc_mime_types');

Cheers!