Approaches to Improving Core Web Vitals (Display Speed and Usability) to Maximize AdSense Revenue
When pursuing traffic and click-through rates with Google AdSense, “website display speed and usability (Core Web Vitals)” are just as important as content quality and ad placement.
No matter how wonderful your articles are, if it takes more than 3 seconds for a page to open, or if the screen shifts during loading causing accidental taps, readers will feel stressed and leave immediately (bounce from the page).
Page display speed and comfort not only directly affect search engine evaluation (SEO), but also link directly to increased ad viewability (the percentage of ads correctly displayed on screen) and higher click counts.
In this article, we will explain the key metrics of Core Web Vitals for AdSense sites and specific improvement measures to increase ad revenue without compromising the reader experience.
The 3 Key Metrics of Core Web Vitals
Google focuses primarily on the following three metrics to evaluate user experience (UX):
1. LCP (Largest Contentful Paint)
The time it takes from when a user opens a page until the largest element on the screen (such as a main image or heading) is displayed.
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Target value: Within 2.5 seconds
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Impact on AdSense: If slow, readers will leave before the above-the-fold content is displayed, and ads will not be read.
2. INP (Interaction to Next Paint)
The speed from when a user performs an action like a tap or click until the screen actually responds.
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Target value: Within 200 milliseconds
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Impact on AdSense: If slow, buttons and links will be unresponsive, causing stress to the user.
3. CLS (Cumulative Layout Shift)
The degree to which elements or text positions shift unexpectedly while a page is loading.
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Target value: 0.1 or less
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Impact on AdSense: The delayed loading of ad code pushes down the main text, which is the biggest factor causing unintended “accidental taps.”
3 Improvement Techniques to Balance Display Speed and AdSense Display
Because AdSense ad code uses JavaScript, placing too much of it tends to make page loading heavy. Let’s master the improvement points to balance speed and profitability.
1. Image Optimization and Adoption of Next-Generation Formats (WebP/AVIF)
If the images used in articles are large, LCP will deteriorate significantly.
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Image compression: Use plugins or online tools to reduce file size without sacrificing display quality.
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Utilizing next-generation formats: Convert and serve images in high-compression formats such as WebP or AVIF.
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Utilizing lazy loading: Load images that are off-screen only when they are about to enter the viewport upon scrolling.
2. Securing ‘Height and Size’ for Ad Slots in Advance (CLS Countermeasures)
To prevent CLS, where text shifts downward the moment an ad loads, use CSS or other methods to pre-reserve the height or area of the container where the ad will be displayed.
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Specify a minimum height (min-height) for the parent element where the ad code is placed.
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By eliminating screen jitter (layout shifts), you can prevent policy violations caused by accidental clicks and provide a healthy user experience.
3. Script Loading Order and Plugin Optimization
If you are using WordPress or similar platforms, unnecessary plugins or heavy JavaScript may be delaying loading.
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Disable or delete unused plugins.
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Check if the async attribute (asynchronous processing) is applied to the AdSense script tag to ensure it does not interfere with the loading of other important content.
Measuring Results and Periodic Checks After Improvements
After implementing countermeasures, use the following free tools to check for changes in metrics.
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PageSpeed Insights: Specifically identify points for improvement based on actual user data (field data) and measurement environments (lab data).
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Search Console (Core Web Vitals): Check the trends of URLs across the entire site that are classified as ‘Poor’ or ‘Need Improvement’.
When display speed improves, readers can read articles more comfortably, which increases page dwell time and site navigation rates. As a result, AdSense ads are more likely to be fully viewed, leading to a boost in revenue.
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