Are you looking to maximize your ad revenue with Google AdSense this year? With so many different ad sizes and formats to choose from, it can be tricky to know which ones will perform best on your website.
That‘s why I‘ve put together this ultimate guide to the highest earning AdSense banner sizes and formats for 2023. I‘ll share my expert insights on which ad units are generating the most revenue for publishers, based on the latest industry data and my own experience.
Whether you‘re a seasoned pro or just starting out with AdSense, you‘ll walk away with actionable tips you can apply right away. So let‘s dive in!
Why Ad Size and Format Matter for AdSense Earnings
Before we get to the top ad sizes, it‘s important to understand why your choice of ad units matters. The size, appearance, and placement of your ads directly impact two key things:
- How much advertisers are willing to pay for your ad space
- How many visitors will actually click on your ads
Generally, advertisers prefer ad formats that give them ample room to showcase their message and visuals. Bigger ad sizes tend to get more attention and command higher costs-per-click (CPCs) or costs per-thousand-impressions (CPMs).
However, ads that are too large or obtrusive can turn off users and make your site look spammy. The key is finding a balance between ad revenue and user experience.
You also need to consider what portion of your ad space is actually seen by visitors. According to Google, more than half of ad impressions aren‘t viewable. That means if your ads are below the fold or obscured by other content, your earning potential is limited.
The goal is to choose ads that complement your site layout, grab attention, and match your visitors‘ interests. Here are the sizes and formats I recommend for maximizing your AdSense income.
1. Medium Rectangle (300×250)
The medium rectangle is far and away the most popular and best performing AdSense ad size. Its dimensions of 300×250 pixels make it incredibly versatile. You can easily slot it into your content, sidebar, or footer.
This ad unit is popular with advertisers across all verticals, so it has a high volume of ad inventory. That means more competition for your ad space and higher earnings for you. Publishers love it because it performs well on both desktop and mobile.
Typical click-through rates for the medium rectangle range from 0.2% to over 0.5% depending on positioning. Mid-content ad placements usually get the highest engagement and viewability rates.
2. Large Rectangle (336×280)
The large rectangle is very similar to the medium rectangle, just slightly wider at 336×280 pixels. It offers a bit more real estate for advertisers to get creative with their messaging.
However, that larger size does come with some limitations. The large rectangle may not fit in narrower website layouts, especially on mobile screens. It‘s best used in wider content areas or as an interstitial popup.
Despite the tighter inventory than its smaller cousin, the large rectangle tends to have higher CPMs due to its impact. On average, publishers can earn 15-25% more per impression over the medium rectangle, but with a slightly lower CTR.
3. Leaderboard (728×90)
The classic horizontal leaderboard banner is still going strong after all these years. Measuring 728×90 pixels, this ad size is usually the first one visitors see when landing on a page.
Leaderboards are great for generating brand awareness and driving traffic to advertisers‘ sites. Many premium publishers sell this ad placement directly to sponsors at high CPMs.
However, Google recommends using no more than one leaderboard per page to avoid annoying visitors. Aim for an above-the-fold placement for maximum viewability, but be wary of pushing your content down too far.
The average CTR for leaderboards is around 0.08%. But a well-targeted ad served to an engaged user can easily surpass that benchmark.
4. Half Page (300×600)
Also known as the large skyscraper, the half page ad is a real attention-grabber. At 300×600 pixels, it takes up a significant chunk of vertical space, usually embedded within or alongside content.
Half page ads are becoming more popular as advertisers shift to interactive rich media and video creative. These immersive formats tend to perform better in larger canvases like the half page.
For publishers, half page units can be a good way to increase ad revenue without adding more ad clutter to the page. Just be judicious about where you place them. Too many half page ads can quickly overwhelm visitors and detract from your content.
Typical half page ad CTR falls in the 0.1-0.2% range. But the high impact can translate to CPMs up to 3-4X that of standard banner sizes.
5. Large Mobile Banner (320×100)
Mobile traffic continues to dominate worldwide. According to Statista, mobile devices generated over 54% of global web traffic in 2021. If your site has a lot of mobile visitors, optimizing your mobile ad layouts is a must.
The large mobile banner is one of the top performing mobile ad sizes. With dimensions of 320×100 pixels, it spans the full width of most smartphone screens. You‘ll usually see it placed at the top of a mobile page.
Due to its prominent placement, the large mobile banner attracts a lot of advertiser demand. Competition for mobile ad space has significantly increased CPCs and CPMs for this format.
However, be careful not to overdo it with mobile banner ads. Google‘s Core Web Vitals initiative now factors mobile experience into search rankings. Too many ads can slow down your page loads and frustrate users.
Average CTRs for mobile banners range from 0.2-0.6% depending on positioning and industry vertical.
6. Mobile Leaderboard (320×50)
Another strong performer for mobile screens is the mobile leaderboard. Clocking in at a compact 320×50 pixels, this ad size is even more streamlined than its bigger brother.
The mobile leaderboard‘s slim profile means you can use it in a variety of placements without hogging too much space. It‘s easily slotted into headers, in-content breaks, and sticky footers.
For a maximally engaging mobile ad layout, try pairing the mobile leaderboard with medium rectangle ads. This combo strikes a nice balance between monetization and user experience.
Typical CTRs for the mobile leaderboard hover in the 0.3-0.8% range, depending on your site category and device breakdown. CPCs tend to be slightly lower than the large mobile banner due to the smaller creative canvas.
7. Wide Skyscraper (160×600)
The wide skyscraper is a unique AdSense size that can be very effective in the right context. Measuring 160×600 pixels, this tall, slim unit is designed to fit vertically along the side of a web page.
Wide skyscrapers work best on websites with fixed-width layouts and generous amounts of content. The ad remains visible as users scroll down the page, ensuring high viewability. It‘s often used to showcase advertisers‘ products or special offers.
However, this ad format doesn‘t work well on every site. The limited width can pose a challenge for some ad creatives. As such, inventory for the wide skyscraper is usually lower than other sizes.
Average CTR for wide skyscrapers is around 0.06-0.1%. While not the highest performing size overall, it can be a solid supporting unit for niche websites that want to maximize every pixel of space.
8. Portrait (300×1050)
Now here‘s an ad size you don‘t see every day. The portrait ad is a supersize version of the skyscraper, spanning a whopping 300×1050 pixels. It‘s typically placed along the side or edge of a site‘s layout.
The portrait ad is ideal for creating an immersive brand experience. Advertisers often use it to showcase interactive product demos, games, or video content. The expansive creative canvas grabs attention like no other.
Of course, with that great size can also come great annoyance if used carelessly. Be very selective about how and where you implement portrait ads. Avoid using more than one per page, and make sure they don‘t slow your page loads to a crawl.
When executed well, portrait ads can generate impressive CPMs thanks to their high impact. However, their CTR tends to be quite low, often less than 0.08%. They‘re best used as a complement to other high-performing ad sizes.
9. Billboard (970×250)
If you really want to go big, the billboard is the largest AdSense display size available. At 970×250 pixels, this monster fills the full width of the screen on most desktop browsers.
As you can imagine, billboard ads are usually the preserve of big-budget brand advertisers. The sizeable canvas is perfect for interactive rich media, multi-frame animations, and auto-playing videos.
Due to the high level of investment required, billboard inventory is scarcer than standard banner ads. Competition for billboard impressions can be fierce in certain verticals, driving up CPMs significantly.
Implementing billboard ads also requires some technical know-how. You need to ensure the ad doesn‘t break your site layout or tank your UX metrics like Cumulative Layout Shift. Definitely not for beginners!
Typical billboard CTR rarely exceeds 0.06% due to banner blindness. But the ads‘ sheer size still makes them a lucrative format for many publishers. A single billboard impression can be worth 10-20X that of a standard banner.
10. Square (250×250)
Rounding out our top 10 best performing ad sizes is the humble 250×250 square. This simple format proves that bigger isn‘t always better when it comes to AdSense monetization.
What the square lacks in size, it makes up for in flexibility. The compact dimensions let you place it in locations where no other ad would fit. Think headers, footers, navigation bars, and widget areas.
The square is also a good fallback size for when you don‘t have larger ad units above the fold. Including a square unit gives you incremental revenue without adding too much visual clutter.
While the square has less ad inventory than flagship sizes like the medium rectangle, it can still generate decent earnings with the right placement and audience. Use it as a supporting player in your overall ad layout.
Square ad CTR fluctuates a lot based on positioning and context. Aim for high-visibility placements to make the most of this small-but-mighty size.
Tips to Boost Your AdSense Earnings
Now that you know the top earning ad sizes and formats, here are some tips to supercharge your AdSense optimization:
1. A/B Test Ad Placements
Not all website layouts are created equal. What works great on one site may tank on another. Use AdSense experiments to test different ad placements and find the ones that generate the most impressions and clicks.
2. Follow the "Above the Fold" Rule
The more of your ad that‘s visible when the page loads, the better the chance it will be seen and clicked. Place your highest paying ad units in the first screen view to maximize revenue.
3. Blend Text Ads with Your Site
AdSense text ads are highly customizable. By matching the color scheme and typography with your site theme, you create a more cohesive user experience. This can lead to higher ad engagement.
4. Try Out New Ad Formats
Don‘t be shy about testing new AdSense formats like native in-feed ads, in-article ads, and anchor ads. These high-viewability placements can tap into incremental budgets and backfill unsold inventory.
5. Prune Low Performing Ads
More ads isn‘t always better. If you have ad units that are generating very low revenue, don‘t be afraid to remove them. This helps you prioritize the placements that are making you the most money.
6. Make Your Site Mobile-Friendly
According to the Google Mobile Ads Blog, over 50% of web traffic comes from smartphones and tablets. To capture that audience, your site needs to be fast and functional on smaller screens. Implement responsive ad units that adapt to mobile browsing.
7. Focus on Traffic and Engagement
The best way to earn more with AdSense is to get more high-quality traffic to your site. Produce great content, promote it on social media, and encourage visitors to stick around. More pageviews and longer session durations will translate into higher ad earnings.
Go Forth and Monetize
There you have it – the ultimate guide to the highest earning AdSense banner sizes and formats. By implementing these top performing units in the right way, you can grow your ad revenue without sacrificing user experience.
Remember, what works for one website may not work for another. Use this data as a starting point, but always be testing and optimizing for your unique audience.
The online ad landscape is constantly evolving, so stay on top of the latest trends and best practices. Keep an eye on your AdSense reports to identify areas for improvement.
With the right combination of ad sizes, placements, and content, you can turn your website into a sustainable income stream for years to come. So what are you waiting for? Go forth and monetize!
