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Image Tag

Last updated on May 29, 2018

You can implement the cookie-based opt-out mechanism through an image tag. Typically, this is the simplest implementation.

For example, if you use the following opt-out image tag:

<img src="http://d.example.com/privacy/optout" />

OpenX then performs the previously-described steps and displays a success or failure image to indicate the result of the opt-out.

By default, if the opt-out is successful; that is, if OpenX is able to set the user opt-out cookie, then OpenX redirects and loads the image referenced in the following URL:

http://www.networkadvertising.org/optout/opt_success.gif

Alternatively, if the opt-out is not successful; that is, if OpenX is unable to set the user opt-out cookie (perhaps because the user does not accept cookies), then OpenX redirects and loads the image referenced in the following URL:

http://www.networkadvertising.org/optout/opt_failure.gif

(Optional) Add parameters to the opt-out tag if you want OpenX to redirect to particular success or failure images.

  • Add the s= parameter with URL of the image to load if the opt-out is successful.
  • Add the f= parameter with the URL of the image to load if the opt-out is not successful.

For example, with these parameters your image tag may look like the following:

<img src="http://d.example.com/privacy/optout
s=http://example.com/my_optout_success.gif&
f=http://example.com/my_optout_failure.gif" />

When using more complex inputs to the s= and f= parameters, the values should be properly escaped or encoded.