ROI Tracking

ROI tracking is designed to be used by clients who do not have other tracking methods available. An example would be clients that do not have affiliate tracking.


There are two modes in which the ROI Tracking URL can be used.

  • Hidden Image - The url is included as a hidden image.
  • Redirect Chain - The customer is redirected to the tracking url, which then redirects the customer back to your site.

Note: Make sure to URL encode the url when using the Redirect Chain mode.


Hidden Image Example:

In this example, we will be using a hidden image to track revenue.

Example Hidden Image HTML:

<img src="http://bidr.trellian.com/roi.php?r=23.95&img=gif">
Or for a secure site:
<img src="https://bid.trellian.com/roi.php?r=23.95&img=gif">

The script will respond with a transparent 1x1 gif image. Note that this image will be returned even if an error occurred.

Redirect Chain Example:

In this mode, the customer is redirected to the ROI Tracking URL, which then redirects the customer back to your site.

Example Redirect Chain URL:

<img src="http://bidr.trellian.com/roi.php?r=23.95&u=http%3A%2F%2Fwww.example.com%2Fthankyou.html">
Or for a secure site:
<img src="https://bid.trellian.com/roi.php?r=23.95&u=http%3A%2F%2Fwww.example.com%2Fthankyou.html">


Note that the redirect url must be url encoded. The url in the example is http://www.example.com/thankyou.html, which would be the page displayed following a successful order.