You login to your AdSense console, click on create an ad and then select the custom ad size option. From there you can enter in the width and height in pixels and then let Google do the rest ...

2. Ad sizes and placements are decisive Do not neglect the placement and size of your Google AdSense ads as they play an important into delivering a better user experience and thus, improving your ...

AdSense refers to Google ads that are placed on independent websites ... to understand which ad units are working the best.

Back in April, Google first alerted some AdSense users about upcoming changes ... To better reflect mobile and desktop screen sizes, all ad units will be Responsive by default.

In June 2009, Google gave more control to their AdSense publishers by giving them the ability to control their font sizes of the ads. But does it work? A WebmasterWorld thread has complaints from ...

Each AdSense publisher must create ad links inside his AdSense account ... Select "Ad Unit" or "Link Unit" and then pick a size, shape and color scheme for your ad links. The color should blend ...

The new units use AdSense’s asynchronous ad code ... This, Google says, means you can “now dynamically specify the size of the ad that will be served, adapting it to fit the way your site ...

Furthermore, this new snippet will allow publishers to select additional ad unit sizes from common AdSense formats. Yes, Google is betting big on mobile ads. Here is a video from Google on this ...