link_safe_urls.html

<p><a href="https://www.example.com">Safe link 1</a></p>

<p><a href="http://www.example.com">Safe link 2</a></p>

<p><a href="ftp://www.example.com">Safe link 3</a></p>

<p><a href="#anchor">Safe link 4</a></p>

<p><a href="#">Unsafe link 1</a></p>

<p><a href="#">Unsafe link 2</a></p>