Images are used throughout your iAd,for backgrounds, themed graphics, your logo, image galleries, and user-configurable wallpapers. They're probably the most common media type in your iAd and are available in a variety of formats, which can be manipulated and edited to enhance your ad's performance and experience.
In our iAds, images can be either JPEG or PNG, depending on what kind of image they contain or what they're going to be used for. JPEGs are typically smaller in file size, as they can be extensively compressed. PNGs often are better quality and more versatile, but this comes at the cost of their larger file size.
You should use JPEGs whenever you can. However, consider using PNGs when:
Your image contains text: The crisp edges of text can get lost when the JPEG is compressed.
Your image contains sharp edges or shapes: Just like with text, the JPEG compression process often blurs sharp line edges.
Your image has large...