As a webmaster, you likely use advertising as your primary source of income. Therefore, it is critical that before a website is ever built, you should strongly consider what sizes will make the most sense for your website.
Undoubtedly, you will have ads both above and below the fold - meaning above the bottom of an open browser window when your site's web page first loads. You will also be able to make these placements either text or graphical display ads.
Standard ad sizes are generally guided by the Internet Advertising Bureau and even though there are many, many sizes, the most popular for web publishers and advertisers are the 728x90, 300x250 and 160x600 (or 120x600) ad units.
This isn't to say there aren't other well-placed sizes that earn a LOT of money. But these are the most popular ad unit sizes in use today.
The 728x90
Commonly referred to as a "leaderboard," most sites have a leaderboard at the top of their interior pages if not the home page, too. With the largest screen space among the three most popular ad sizes, the leaderboard provides advertisers ample horizontal space for messaging and calls to action. Often the difficulty with these ads is the "banner blindess" inherent. Users are so used to seeing this at the top of the page that they don't see the ad space anymore.
For Google AdSense web publishers, the 728x90 ad units will be populated by 3-234x60 text ads across the unit.
The 160x600 (or 120x600)
Known as the skyscraper or sidebar, this vertical ad unit is often used in tandem with the 728x90 to frame the content of a page. A tantalizing opportunity for advertisers working with publishers directly is the ability to "roadblock" a page and simultaneously run a graphical display ad in the leaderboard and skyscraper positions.
But for smaller websites that will just use advertising tools such as AdSense, the roadblock is less of a concern. The skyscraper also runs the risk of "banner blindness" and can hold up to 5 Google AdSense text ads.
Undoubtedly, you will have ads both above and below the fold - meaning above the bottom of an open browser window when your site's web page first loads. You will also be able to make these placements either text or graphical display ads.
Standard ad sizes are generally guided by the Internet Advertising Bureau and even though there are many, many sizes, the most popular for web publishers and advertisers are the 728x90, 300x250 and 160x600 (or 120x600) ad units.
This isn't to say there aren't other well-placed sizes that earn a LOT of money. But these are the most popular ad unit sizes in use today.
The 728x90
Commonly referred to as a "leaderboard," most sites have a leaderboard at the top of their interior pages if not the home page, too. With the largest screen space among the three most popular ad sizes, the leaderboard provides advertisers ample horizontal space for messaging and calls to action. Often the difficulty with these ads is the "banner blindess" inherent. Users are so used to seeing this at the top of the page that they don't see the ad space anymore.
For Google AdSense web publishers, the 728x90 ad units will be populated by 3-234x60 text ads across the unit.
The 160x600 (or 120x600)
Known as the skyscraper or sidebar, this vertical ad unit is often used in tandem with the 728x90 to frame the content of a page. A tantalizing opportunity for advertisers working with publishers directly is the ability to "roadblock" a page and simultaneously run a graphical display ad in the leaderboard and skyscraper positions.
But for smaller websites that will just use advertising tools such as AdSense, the roadblock is less of a concern. The skyscraper also runs the risk of "banner blindness" and can hold up to 5 Google AdSense text ads.
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