## Overview

A tracking pixel is a tool used to track ad impressions. It consists of a piece of code inserted into the JavaScript/HTML of a creative. This code causes a 1x1 transparent image to track with the ad.

## Setting Up Pixel

To set up an ad using a third-party tracking pixel, you'll want to first upload the image as with a normal image creative, then call the image using HTML so that you can append the tracking pixel to that HTML. To do this, use the following steps.

1. First, create a new creative, and set the format to **Image**. Upload your creative, and click "Save".
2. Open the creative again, then control-click or right-click on the image and choose _"Copy Image Location"_ or _"Copy Image Address"_ depending on your browser. This will copy the URL of the static image into your clipboard.

3. Switch the creative from **Image** back to **Javascript/HTML**.

4. In the HTML field, input the following code:

```text
   <a href="{{url}}" target="_blank"><img src="STATIC_IMAGE_URL" /></a>
   ```
   Replacing `STATIC_IMAGE_URL` with the image URL you copied earlier, then save the creative. See screenshot below how this will appear in the user interface:

5. Copy and paste the 3rd party pixel code below the tag code. Example shown below.