For underwriters who decide to send us a creative for display on the web, please follow these guidelines for size:

The sizes are below, and listed length x width in pixels.

These creatives need to be a JPG, GIF, or PNG file. We cannot accept any other file types.

Leaderboard -728x90px  
This creative is positioned right under the grey bar & menu on desktop.

Medium Rectangle – 300x250px
This creative displays on desktop in three blocks on the sidebar of wamc.org.

Mobile Web – 320×50
This creative shows on mobile devices only, NOT desktop. It is very small so keep these ads simple.

Tablet Web Ad – 728x90px
This is for tablet only, not mobile or desktop. This would be in the same position as the leaderboard, under the grey bar.