I finally got around to adding clean URLs via .htaccess. Instead of canonical urls such as:

    http://alexanderseto.com/portfolio.php
    http://alexanderseto.com/blog.php?page=2
    http://alexanderseto.com/blog.php?post=2015-11-18-hello-world

Webpages are now served at:

    http://alexanderseto.com/portfolio
    http://alexanderseto.com/blog/2
    http://alexanderseto.com/blog/post/2015-11-18-hello-world