Ad Units

All of our ads are measured in pixels. Pixels are individual points in an image that are generally represented by a single dot or square. The image you see is comprised of a collection of these individual pixels. On the Web, one inch is the equivalent of 72 pixels. Since screen resolutions differ, the size and spacing of pixels can vary; this may slightly affect the image size.

The ad samples in this section should help you understand how big the ads we serve really are. This is important when determining what is an appropriate amount of content to include in your ad.

Learn More About Ad Units

Source Key uses only IAB standard ad units. Visit the Internet Advertising Bureau for ad specifications, recommendations, and other tools and resources.