Google hosted a 30 minute “webinar” today, with a focus on site targeting — creating ways for advertisers to target areas of your site to advertise on. I’ll probably post about that in a few days when Google releases their summary of the webinar.
However, one interesting bit of discussion popped up in the Q&A portion of the webinar. Google advised webmasters to use the 300×250 ad unit, as that is preferred by advertisers (especially for image and video ads). However, some of the attendees said that they get a higher CTR when they use the 336×280 unit. Google agreed that it was often the case, but that you’d probably get a higher CPC if you used the smaller unit — especially for image ads.
Another user asked if 300×250 image/video ads could show up inside of the 336×280 ad unit. Google gave a clear “no” to that. They said that advertisers can build a creative in both sizes, but image/video ads only show in the size they were created for. The text ads, of course, can float around to any of the ad units.
As a result of that, I’ve swapped out a few of my 336×280 units for 300×250’s. I’ll track the channels and see how it goes.
Any of you have previous experiences comparing these two sizes?
Hello, could you please report on your findings about CPC and overall earnings by switching to 300×250? Thanks.
This is such an useless post, where is the follow up?
Nice article, CTR for 336 x 280 is high & CPC is also good. But 300 x 250 ads are more relevant and has high CPC.
I’ve landed here in 2020. What’s the scenario of these two ad units in 2020? Can you please update the article so that we can know which performs better in 2020?