If you are using WordPress twenty fifteen theme, you may have this links in your footer with proudly powered by WordPress .
You can easily remove this powered by WordPress in twenty fifteen theme, but the problem is when new version arrive, if you update to the latest version again you have to remove it manually. So to avoid such problems it's better to create a twenty fifteen child theme.
How to remove proudly powered by WordPress in Twenty fifteen theme:
1. Login to your Dashboard.
2.Click Apperance -> Editor
3. Open footer.php file and check for below lines ( line 25 )
<a href="<?php echo esc_url( __( 'https://wordpress.org/', 'twentyfifteen' ) ); ?>"><?php printf( __( 'Proudly powered by %s', 'twentyfifteen' ), 'WordPress' ); ?></a>4.Completely remove the above code and save it.
5.Now proudly powered by WordPress link will disappear.Let us know, if you face any problem.
Alternately, you can hide the proudly powered by wordpress link by adding the following code to your twenty fifteen child theme's CSS.
.site-info {
display: none;
}Both methods are working fine from our side, you can use any of them, which you feel comfort and easy to edit your theme files.