Specifications:
• Dimensions are 300 pixels wide x 100 pixels high.
• Ads must be PNG or JPG (PNG tends to display better) and in RGB (rather than CMYK) mode.
We recommend:
• Making sure your chosen image represents what you do. (AKA, a picture of flowers if you are not a florist will confuse people.)
• Including your business name and location or geographic region on your ad.
• Confirm the text is legible at scale, and take a look at our current sidebar ads to see how yours will compare. Better be legible than recreate your logo in unreadable miniature.
Please see here for tips and example ads.