WordPress has their own logo for admin login page but sometime we need to change it.
so we can totally change it with simple code without using any plugin.
For changing the wordpress admin login page logo place following php function in function.php file of your active theme.
<?php
function login_logo_own() {
?>
<style type="text/css">
body.login div#login h1 a {
background-image: url(wp-admin/images/logo-1.png); //Add your logo image in this url
padding-bottom: 30px;
}
</style>
<?php
} add_action( 'login_enqueue_scripts', 'login_logo_own' );
?>
The above code copy and paste in your active theme function.php file.