Replace WP Logo and the default ‘logo’ link

add_filter('login_head', function () {

    $custom_logo = 'https://i.imgur.com/0qxSpsL.png'; // Replace the image url

    $logo_width = 200; // Replace the width and height accordingly

    $logo_height = 80;

    echo '<style type="text/css">

        .login h1 a {

            background-image: url(' . esc_url($custom_logo) . ') !important;

            margin: 0 auto;

            width: ' . $logo_width . 'px !important;

            height: ' . $logo_height . 'px !important;

            background-size: contain;

            background-position: center;

        }

    </style>';

}, 990);

add_filter( 'login_headerurl', function () {

    return 'https://example.com'; // Replace the "logo" link here

});