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July 10, 2005

Top three ad unit sizes according to AdSense

One of the juicy tidbits to come out of the Google AdSense webinar for new publishers is the comment by Phoebe Ho of the AdSense Optimization Team.

The next optimization tip that I'd like to focus on is ad format. … You see our best performing ad format. It's the large rectangle, 336x280. So the wider ad formats are doing better than the other ones and the reason is that they actually take up fewer lines. And so with every additional line, you have a chance of losing that interested user.

So the wider formats do best so specifically, the top three formats are the 336x280 that you see on the page; the 300x250 medium rectangle; and then the 160x600 wide skyscraper.

No real surprises, but an official confirmation of what the three top performing ad unit sizes are, something that AdSense has not said publicly before.

So to recap, the top three are:

You can view the transcript here, scroll down to the 13th paragraph.

There has been lots of speculation about the best performing AdSense ad unit sizes, and the 336x280 has always been the best ad unit size in my own personal experience. But even the best performing ad unit size will not perform well on a site if it does not suit the page layout.

This sounds like something that should be added to the AdSense Optimization Tips page.

There is a comparison discussion about the top 3 ad units over at the Search Engine Watch forums.

Posted by Jenstar at July 10, 2005 03:23 PM

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Comments

Great news, i never used the 336x280 ad, I will test it right now !! I think sometimes will be hard to fit but if it means more money... I go to hard working :D

Posted by: Hipocrita at July 12, 2005 12:42 AM

The 300x250 and 336x280 layouts don't work with all sites. I can't figure out any appropriate place to put them on my site, for instance. But the 160x600 wide skyscraper blends in well with my sidebar and brings in quite a bit of money (with the rest brought in by the 468x15 link unit, which also way exceeded my expectations).

Posted by: IO ERROR at July 14, 2005 08:01 PM

I think 160x600 wide skyscrapper is very good. My left sidebar already contents menus. I don't know what to do with right sidebar until I read this article.

Posted by: Didi Wahyudi at August 1, 2005 05:10 AM

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