When a S2S (server-to-server) postback is not supported, an alternative solution for tracking conversions is to use a postback pixel (conversion pixel).

Tracking pixels operate on the basis of cookies, therefore they are not dependent on the click ID transmitted in the offer URL. The value of the click ID is stored in the original cookie registered for this visitor, so conversion tracking will work even if the parameter has not been transmitted to the offer.

The pixel of the postback is always placed on the page following the conversion page, for example, on the so-called Thank You Page - page informing about the success of the completed target action (registration, purchase, etc.).

The click ID value is assigned to the visitor in two cases: when you go through the tracker campaign link or when you get to the landing / offer page with the direct tracking pixel set. This click ID value is then recorded in the visitor’s web browser cookie.

The connection protocol (http or https) of the pixel must match the connection protocol of the page where it is located. If you put a pixel with the http protocol on a landing / offer with the https protocol (or vice versa), tracking will not be performed.

The pixel connection protocol depends on the SSL of your domain. How to get SSL.