In order to help your website gain better search engine recognition, clean URLs setup is crucial. By default , when you are creating pages for your Drupal website, their URLs will look like :
http://yourdomain.com/?p=16/
and if you use the clean URLs , they will be:
http://yourdomain.com/article-name/
To enable clean URLs , login to your Drupal dashboard -> click on Configuration -> look in the Search and Metadata section -> Clean URLs .
There tick the Enable Clean URLs option and press the Save Configuration button:
That’s it ! You now have the Clean URLs enabled.