Remove author word from wordpress permalink

In wordpress some people wants to create the community site and they want to create uniqe url for each user. In that time you need to remove the author word from wordpress permalink. Normally when we want to see the author URL then you can see URL as follows.

Remove author word from wordpress permalink

http://website.com/author/username/

If you can want to change the url to following

http://website.com/username

then you just need to edit only .htaccess file. Put following line in that file

RewriteRule ^author/(.+)$ http://www.yourblog.com/$1 [R=301,L] // change yourblog to website name 

If you dont want to change the .htaccess file and still want to change the permalink structure then open the functions.php file from you wordpress theme folder.

add_filter('author_link', 'no_author_base', 1000, 2);
function no_author_base($link, $author_id) {
    $link_base = trailingslashit(get_option('home'));
    $link = preg_replace("|^{$link_base}author/|", '', $link);
    return $link_base . $link;
}
add_filter('author_rewrite_rules', 'no_author_base_rewrite_rules');
function no_author_base_rewrite_rules($author_rewrite) {
    global $wpdb;
    $author_rewrite = array();
    $authors = $wpdb->get_results("SELECT user_nicename AS nicename from $wpdb->users");
    foreach($authors as $author) {
        $author_rewrite["({$author->nicename})/page/?([0-9]+)/?$"] = 'index.php?author_name=$matches[1]&paged=$matches[2]';
        $author_rewrite["({$author->nicename})/?$"] = 'index.php?author_name=$matches[1]';
    }
    return $author_rewrite;
}