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Guidelines for Banner Ads and Sidebar Graphics

The images used for the sponsor banners and sidebar graphics can be any size you wish, but there are some practical limits so that you don't affect the layout of your pages.

The standard size for web banners is 468 pixels wide by 60 pixels high. You can use larger or smaller sizes, but we recommend not exceeding 700px wide or 200px high.

The sidebar graphics can also be any size, but we recommend keeping them under 175px wide. Any larger, and they will make the whole sidebar section wider. As an example, you could sell 50px high images (by 175px wide) as "small" sidebar ads, and 100px high images as "large" ads.

Unless you're using photographs in your images, then it would probably be best to use the GIF file format. That works best for flat images. If you're using photos, gradients, or complex graphics, then JPEG may be better.