Silakan tambahkan code dibawah ini di dalam file function.php
function custom_logologin() {
echo '<style type="text/css">
h1 a {
background-image: url("URL GAMBAR") !important;
}
</style>';
}
add_action('login_head', 'custom_logologin');
Thanks for reading: Ubah Logo W fi Login Wordpress, Sorry, my English is bad:)