What are the Best Mobile Ad Sizes?


More than 5 billion people in the world have a mobile phone connection according to a report from GMSA Intelligence. This represents a huge number and the amount of mobile phone users has grown massively in the past 10 to 15 years.

This means that the mobile market is something that shouldn’t be ignored by any marketer. While not every one of the 5 billion people who have access to a mobile phone connection will have a smartphone that is capable of displaying mobile display ads or that they even use it for the internet, a big chunk of the 5 billion will.

So, what does this mean for mobile banner advertising and what are the best ad banner sizes for use in 2018?

mobile banner ad sizes and How to optimise mobile ads

Mobile banner advertising

Mobile banner ads still exist!

While there are new strategies coming out to appeal to mobile users all the time, mobile ads are still very effective. This is why companies and advertisers will use them. Even though some people in the industry have said that mobile banners will disappear in the next few years they show no sign of going away anytime soon.

Google’s 300×250 update

Last year Google altered their police regarding 300×250 mobile ad sizes. Prior to 2017 restrictions were in place to limit this size of advertisement being displayed above the fold. They were seen as being distracting to Google users however after a long period of testing this restriction was lifted.

For publishers, this meant that there is now an increase chance of earning better cost-per-thousands impressions as the 300x 250 ads are high performing.

What are the best mobile ad sizes to use?

What mobile banner ad sizes are there?

There are various different banner ad sizes that work on mobile devices. We are going to show you some of the most common sizes and let you know their positives and drawbacks.

#1 300 x 250

This is the most competitive and popular mobile banner ad size especially since Google lifted the restrictions on 300 x 250 ads last year.

This spot on a webpage gets the most traffic and therefore the cost of having an ad in this spot and with these dimensions rises considerably compared to other sizes on this list.

If you are gunning to display a 350 x 250 ad then make sure it is as original as it can be and allows you to stand out from the crowd.

#2 728 x 90 and 468 x 60

You will mainly see these banner ad sizes on websites that don’t have a mobile version available however these ads are responsive. It means that they will adapt to whatever screen size they are being used on.

While these spots aren’t as sought after as the 300 x 250 market, they are still competitive and offer a prime location to get impressions, clicks and ultimately conversions.

#3 300 x 100 and 305 x 99

These ads are normally found at the top of a webpage and after 350 x 200 they are the second most competitive. The fact that they are usually seen near the top means that they are very competitive but they offer a great chance to get impressions.

It is best to start with the 300 x 100 if you are wondering what one to go with first.

#4 250 x 250

You will recognise this mobile ad unit right away as it is a square.

Advertisers don’t use the 250 x 250 square as a premium spot as it isn’t one of the most sought after however, it offers a great chance to increase your traffic. There is a limit on the supply of available display ads for this size however it is able to fit into smaller spaces which can be great for mobiles.

How to optimise mobile display ads

There are a variety of different mobile ad sizes out there that have different rates of engagement, impressions and clicks.

Some mobile ads display better than others and depending on what size you seek, the cost can vary as well.

Optimizing your ads is important regardless of how big or small they are. You can find a variety of mobile ad optimization tips that will help you to get the very best out of your ads so that they have the maximum impact. Don’t just target one ad size or one optimization method. Instead, you should test out different mobile ads with several strategies for optimization to find out which works best in the short, medium and long-term.

The mobile market is huge and given the recent data it is only going to get bigger in the years to come. Mobile ads are still relevant and highly effective so try out the different sizes to see what has the biggest impact for your business.

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