If you need to put a URL in our WordPress content and make this content clickable, the default way is time consuming: you need to add the link manually, using the WordPress's WYSIWG editor.

But WordPress offers a quite easy way to do it automatically.

All you need to do is activate the function make_clickable in your WordPress, and WordPress will do all the job.

To use this function you only need to add one row of extra code on functions.php :

add_filter('the_content', 'make_clickable');

This function works with http URL, email addresses and FTP..