wp-login-functions.php

<?php

// Include Main Stylesheet on Login Page
function my_custom_login() {
	echo '<link rel="stylesheet" type="text/css" href="' . get_bloginfo('stylesheet_directory') . '/assets/css/main.min.css" />';
}
add_action('login_head', 'my_custom_login');


// Add title to Login page
function custom_login_title($origtitle) { 
    return get_bloginfo('name') . ' Login';
}
add_filter('login_title', 'custom_login_title', 99);


// Add message to Login page
function custom_login_message() {
	$message = "<h1 class=\"login-title\">Login</h1><p class=\"login-message\">Welcome back.</p>";
	return $message;
}
add_filter('login_message', 'custom_login_message');


// Remove the WP default "shake" animation from Login page
function remove_loginshake() {
	remove_action('login_head', 'wp_shake_js', 12);
}
add_action('login_head', 'remove_loginshake');



// Change WP default error message on Login page
function login_error_override() {
    return 'Invalid email or password';
}
add_filter('login_errors', 'login_error_override');


// Automatically check the "Remember Me" on Login page
function login_checked_remember_me() {
	add_filter( 'login_footer', 'rememberme_checked' );
}
add_action( 'init', 'login_checked_remember_me' );

function rememberme_checked() {
	echo "<script>document.getElementById('rememberme').checked = true;</script>";
}


// Change the Password label on Login page
function change_labels( $translated_text, $text, $domain ) {
    if ( 'Password' === $text ) {
        $translated_text = 'Password <a id="pw_forgot" href="/">Forgot?</a>';
    }
    return $translated_text;
}



function register_change_labels_filter() {
    add_filter( 'gettext', 'change_labels', 20, 3 );
}
add_action( 'login_head', 'register_change_labels_filter' );