Google AdSense Now Enables Publishers To Set Custom Ad Sizes

Google has announced a new feature that makes it possible for publishers using AdSense to create their own custom ad sizes. The custom sizes are applicable to both text and display ads.

Google will determine the number of text ads that appear in an ad unit, and may change the results for a given impression. According to the announcement, the Google “system predicts the value of each competing ad for every impression, based on historic performance and comparison across a variety of scenarios.”

With display ads, the Google system determines the appropriate ad size to fit in the space selected. The screenshot below shows how display ads can render within custom ad units — illustrated by dotted lines here for illustration purposes only.

There are limitations to what you can do with custom ad sizes. The new size restrictions include:

• Only one dimension can be greater than 300 pixels
• The minimum width is 120 pixels
• The minimum height is 50 pixels
• Neither height nor width can exceed 1200 pixels.

To set up custom AdSense ads on your site, select “Custom ad size” from the Ad Size drop down and set the height and width specifications you want.

About The Author

Ginny Marvin

Ginny Marvin was formerly Third Door Media’s Editor-in-Chief, running the day-to-day editorial operations across all publications and overseeing paid media coverage. Ginny Marvin writes about paid digital advertising and analytics news and trends for Search Engine Land, Marketing Land and MarTech Today. With more than 15 years of marketing experience, Ginny has held both in-house and agency management positions. She can be found on Twitter as @ginnymarvin.