As standard, A WordPress theme includes a link back to WordPress in the footer. This isn’t always desirable, especially if you have a business website. So how do you remove this?
Login to your WordPress dashboard and go to…
Appearance > Editor > Footer.php (see image below)
Locate and delete the text that says
<a href=”<?php echo esc_url( __( ‘http://wordpress.org/’, ‘twentytwelve’ ) ); ?>” title=”<?php esc_attr_e( ‘Semantic Personal Publishing Platform’, ‘twentytwelve’ ); ?>”><?php printf( __( ‘Proudly powered by %s’, ‘twentytwelve’ ), ‘WordPress’ ); ?></a>
Some sites may say something different, you are looking to delete everything between the opening…
<a href and the closing </a>