Google AdSense is the first monetisation tool many publishers turn to, yet it is one of the underutilised revenue platforms. While it offers potential lucrative returns, a significant number of publishers quickly shift to alternative platforms without thoroughly exploring or optimising the available options on AdSense, potentially leaving money on the table.
This lack of optimisation stems from not understanding the various bid types available and how each can be tailored to maximise revenue based on specific website dynamics and audience engagement.
We’ll explain the varied bid types provided by Google AdSense in this article, to arm you with the knowledge to unlock the full earning potential of your site. From CPC to CPM and more niche options like Active View CPM and CPE, understanding these can transform how you generate revenue.
What is AdSense and How Does it Work?
AdSense is a program run by Google that allows website owners to monetise their sites via ads. It seamlessly integrates ads into your web pages, which are precisely targeted to match your audience and content. These ads can vary from text to rich media formats and are sourced from a vast pool of advertisers participating in the Google Ads program.
Google AdSense employs a sophisticated algorithm to ensure that the ads displayed are relevant to your visitors, thereby increasing the likelihood of engagement and, consequently, your earnings. Different advertisers bid for your website ad units, and the highest bid ads are displayed on your site. There are four primary bid types that determine your ad revenue.
- CPC – Cost per click
- CPE – Cost Per Engagement
- CPM – Cost per mile or Cost per thousand
- Active View CPM
Google AdSense Bid Types
Choosing the right bid type can significantly impact your revenue as a publisher. Each bid type offers unique advantages tailored to different kinds of content and audience behaviours. We’ll explore various bid types available on AdSense, to help you determine which option best fits your website’s needs and maximise your earning potential.
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CPC
CPC, or Cost-per-Click, pays publishers each time users click an ad displayed on their website. It is a performance-based advertising model, meaning earnings are directly tied to audience quality and click-through rates.
CPC is action-driven, so it is ideal for sites with an active audience base who can potentially engage in your site. It allows publishers to generate more clicks and, consequently, more revenue.
Website owners using CPC should plan to create quality content that hooks visitors to the site, maintain better UX, and select ad units in ways that offer the best user experience. To maximise earnings, publishers can also consider implementing interstitial ads strategically, as these formats drive engagement while maintaining user experience.
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CPM
CPM, standing for Cost Per Mille, denotes a thousand impressions. This model pays publishers for 1000 impressions received on ads displayed on their website, regardless of whether they are clicked on or not. It prioritises visibility and brand exposure, offering a distinct revenue medium for publishers.
The CPM model is ideal for websites with high traffic volumes and can ensure a considerable number of ad views. The concept is straightforward: the more users view the ads, the higher the revenue. Under this model, the focus shifts from encouraging user interaction with the ad to maximising ad impressions.
To get optimal results, website owners should aim to position ads where they are most likely to be seen, such as above the fold (the first portion of the website that is visible without scrolling), without incentivising clicks directly.
Unlike the CPC model, which is performance-based, CPM guarantees revenue as long as the ads are being displayed and viewed, providing a more predictable income stream. Check our detailed comparison between CPM, eCPM, and RPM to learn more.
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CPE
CPE, or Cost Per Engagement, is a dynamic advertising model focusing on user interaction with an ad. Publishers using this model only earn when users take a specific action with an ad, which could range from watching a video or expanding a rich media ad to interacting with a game within the ad. This model denotes a shift towards valuing deeper user involvement over mere views or clicks.
The primary difference between CPC and CPE is that with CPC, publishers earn each time an ad is clicked on, whereas with CPE, publishers earn when users engage with the ad in a specific, predefined manner.
As the CPE model allows advertisers to drive a specific level of user interest or intent, they are willing to pay more for guaranteed engagement, so publishers can often earn higher revenues for CPE ads compared to CPC or CPM ads.
However, similar to CPC, this model is suitable for sites that can drive highly active users and have a streak of healthy CTR.
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Active View CPM
Active View CPM is a refinement of the CPM bidding strategy that focuses heavily on the actual visibility of ads. This metric was developed to assure advertisers that their ads are not only served but have a high probability of being seen by users, thus increasing the chances for these ads to make an impact.
The active view measurement is that a display ad is considered viewable if at least 50% of its pixels are in the viewable space of the browser window for at least one second. Publishers who utilise Active View CPM can earn only when ads meet these viewability standards, not merely for ad impressions served.
For publishers looking to further enhance ad visibility and revenue, tools like real-time bidding (RTB) offer opportunities to attract high-quality, viewable ads from top-tier advertisers.
Optimization Tips for Google AdSense
Google AdSense bid types are selected by advertisers and publishers have very little control over which type of bidding is used for the Ads displayed. However, in the first half of 2024 multiple publishers reported a significantly higher amount of CPM bids on Google AdSense. These were as high as 100% for a few publishers. Here are some of the steps you can take to optimise your earning from Google AdSense.
- Optimise Ad Placement and Visibility
A good practice for optimisation would be to place Ads Above the Fold (Part of the page visible without scrolling). When Ads are placed above the fold, they are easily viewable by website visitors and are quick to collect impressions.
Publishers should also use responsive ad units so that they are correctly displayed across all the devices used to visit the website. Lastly, you can also use Google’s Ad Balance tool to optimise the number of ads displayed on your website, balancing user experience and ad revenue.
- Pick popular Ad Formats and Size
A sure way to boost your AdSense earnings is to use popular ad formats that are commonly used by advertisers. As a publisher, you can experiment with different ad formats like display ads, video ads, and native ads to see which performs best for your website audience. Refer our game ad formats guide which showcases dynamic ad strategies.
Apart from Ad formats, opting for popular ad sizes in your layout will help you boost revenue. Ad Sizes that are popular will ensure that you have a higher fill-rate. Higher fill-rates are essential to bump up your ad earnings. Some examples of popular ad sizes are Medium Rectangle (300×250), Leaderboard (728×90), and the Wide Leaderboard (960×90). While you optimise for desktop, don’t forget to optimise your mobile layout, popular ad sizes include Mobile leaderboard (320×50), and Medium rectangle (300×250)
- Leverage Google AdSense tools
You can use the Auto Ads feature in Google AdSense to optimise ad revenue. This feature allows Adsense to study you page layout and existing ad placement to automatically place ads in optimal places.
Experiments is another feature on AdSense that allows you to run experiments by running a different combination of ads on the same page to gauge which variation works better for your website content and audience. If you’re looking to expand into new monetisation strategies, consider AdSense for Video as part of your experiments.
Next Steps
Google AdSense offers a promising avenue for publishers and website owners to earn money from their sites. However, achieving significant earnings through AdSense requires more than just placing ads on your web pages; it involves strategic planning, continuous optimisation, and a deep understanding of your audience’s behaviour and preferences.
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