How to add HTML to page following user/register to track Google AdWords conversions? I want to track conversions for Google AdWords. Basically I want to track when people sign up via the user register page (i.e. when they click join).

Google provides code (which is basically a little image) which it says I have to add to the page I want to track. I figure I need to add this to the page which comes after the visitor clicks the join button at the bottom of the user/register page.

(1) Is there a module to do this (Drupal 7)? OR
(2) How can I add HTML to the page following the user/register page (perhaps using hook_page_alter)?
In case of GA or some of the social plugins, you can just add the code in a custom block with FULL HTML format, so you can try creating custom block (maybe in footer) with your code and set the pages where it will appear to user/register