It’s your call. Showing content first is important for visitors to make them stick for longer, or do you want to prioritize showing ads at the cost of page loading performance to make short-term money?
If the ads code is not lazy-loaded, your website speed score may not stand very well and the core web vital test may fail. If you choose to lazy load them, the ad impressions and earnings can impact.
You can run a 30-day test with ads ads lazy loaded and without lazy load to determins which one works best for your website. The conslusion can vary for each website.Rabbit Loader
If you are using Rabbit Loader, most probably there are already some page rules set up in advance to control the optimization behavior. If you are not familiar with it, please read about the page rules first.
Head on to Settings->Page Rules on RabbitLoader account page. Click on the modify button for the page rule you want to modify. If you want this new setting to be effective for the entire website, choose the ‘*’ rule.
Turn on the checkbox for “JS Optimizations” and “Prefer website speed over ads”.
After saving this rule, and purging the cache, the advertisement-related codes will be deferred boosting your page load time and speed score.
The below ad networks are recognized by this setting. If the ad network you are using is not listed below, you can contact our support team.
For many websites, AdSense and Analytics both are handled via Google Tag Manager. Hence, when ads are lazy-loaded, the tag management modules are also lazy-loaded. This can underreport the website analytics data such as visitors, traffic, bounce rate, etc though there is no change in real traffic. If you see a drop in traffic and are concerned about it, please disable the lazy loading of Ads and Analytics scripts as shown in the above screenshots.
Since ads are loaded dynamically, they create their own space on the page causing a shift in the layout. This causes an increased CLS (Content Layout Shift) score and impacts the core web vitals’ health. To fix the CLS caused by ads, two changes are required on your website, depending on how you display ads. For above-the-fold ad units, do not use fluid ad units and reserve some minimum area with CSS like min-height and min-width so layout shift is minimum.