---
title: "Ad Impressions (Website only)"
slug: "ad-impressions-website-only"
updated: 2020-05-06T15:58:44Z
published: 2020-05-06T15:58:44Z
canonical: "onpremises.webtrends.help/ad-impressions-website-only"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://onpremises.webtrends.help/llms.txt
> Use this file to discover all available pages before exploring further.

# Ad Impressions (Website only)

## Ad Impressions (Website only)
An Ad View occurs when a visitor views a page containing an ad. An ad is a link or graphic that contains an Ad Click parameter in the query portion of its URL.

Enabling this setting causes the tag to scan all links on a page, looking for the Ad Click parameter specified in the accompanying text box. The text box must contain a query parameter used to denote Ad Click links. If a matching link is found (case insensitive), its Ad Click parameter value is extracted and assigned to the Ad View parameter (`WT.ad`). If more than one Ad Click link is found, each value is appended to the Ad View parameter, delimited by semi-colon. Two configuration parameters control the behavior of this feature:


**adimpressions (Boolean)**
If set to true, then this feature is turned on and `document.links` will be scanned for the `adsparam` query parameter. If false, this feature isn't used. 

**adsparam (String)**
Sets the name of the query parameter which denotes an ad impression. It defaults to `WT.ac` if not set. 

#### Using WT.ac
Suppose you are using the default Ad Click param: `WT.ac`.
```javascript
dcs.init( { 
 dcsid: "dcs9x99xxxx9xxx9xx9xxxx9x_9x9x",
 adimpressions:true, 
 adsparam:"WT.ac",
});
```

Suppose you have a page with the following Ad Click links:

```html
<a href="http://advendor.com/process_click?WT.ac=image_link_car"><img src="car_ad.gif"></a>
<a href="http://advendor.com/process_click?WT.ac=image_link_house"><img src="house_ad.gif"></a>
<a href="http://advendor.com/process_click?WT.ac=image_link_boat"><img src="boat_ad.gif"></a>
```

The Ad View parameter generated from the page load would be:

`WT.ad=image_link_car;image_link_house;image_link_boat`