Why does Google sometimes overlook the main image in your articles?

What does Google really say about selecting article images?

John Mueller announces that Google can extract any image from an article page, including those positioned in the sidebar, to display in Google News. The engine is therefore not limited to the image highlighted by the editor.

This statement contradicts the common belief that the featured or hero image is always prioritized. Google applies its own selection logic, based on criteria that are not fully documented but clearly include quality, contextual relevance, and positioning in the DOM.

What criteria influence Google's choice?

Mueller remains vague about the exact selection mechanisms. We know that Google analyzes image size, their ratio, proximity to the title, and the main content. An image in the sidebar may be chosen if it meets better scores on these criteria.

The notion of clear identification mentioned by Mueller likely refers to schema.org tags, relevant alt attributes, and the absence of ambiguity in markup. A promotional image or a generic visual placed too high in the code can create confusion for the crawler.

Why does this statement pose a problem for editors?

Content editors typically optimize a unique main image for each article, paying attention to its ratio, weight, and semantic context. Discovering that Google may prefer a secondary visual challenges this strategy.

The problem worsens when the sidebar contains advertising images, banners, or visuals unrelated to the article. Google could thus display a misleading visual, harming user experience and CTR in Google News.

• Google does not guarantee the use of the main image chosen by the editor
• The position in the HTML code and the semantic structure influence selection
• Badly tagged sidebar images can disrupt displays in Google News
• The lack of precise documentation requires testing and observing actual behavior
• Schema.org tags (ImageObject, articleBody) remain recommended but without absolute guarantees

Is this statement consistent with field observations?

Yes, and that's precisely what is frustrating. Editors have been reporting cases for years where Google displays the wrong image in News or Discover carousels. Mueller officially confirms this behavior but without providing a reliable technical solution.

Tests show that Google often favors the largest image in the initial viewport, which explains why some sidebar banners take precedence over the hero image if it is loaded lazily or positioned lower in the DOM. [To be verified]: there is no official documentation precisely ranking these criteria.

What nuances should be made to this rule?

Mueller's statement remains unclear about the weighting of signals. In practice, a correct schema.org markup (with primaryImageOfPage or image in Article) significantly improves the chances that Google respects your choice, but it is not an absolute guarantee.

Another point: Mueller speaks specifically about Google News. Does this behavior extend to Discover, featured snippets, or classic image search? Field feedback suggests so, but Google has never clarified the exact extent of this multi-image selection logic.

In what scenarios does this rule fail completely?

When a page accumulates multiple candidate images of similar size, Google may choose unpredictably. I have observed cases where an author photo sized 1200x630 in the sidebar was preferred over the main illustration image, simply because it appeared first in the source code.

Sites with complex templates or dynamic widgets are particularly vulnerable. If your CMS injects promotional images above the editorial content in the DOM, Google may systematically prefer them, regardless of your markup efforts.

What should you concretely do to control the displayed image?

First action: audit the actual position of images in the DOM, not their visual appearance in CSS. The order of appearance in the HTML code often takes precedence over perceived layout. Use your browser's inspector to check that the main image appears before any sidebar.

Second lever: implement schema.org Article with the image property explicitly pointing to your main visual. Also, add primaryImageOfPage if applicable. These markers guarantee nothing, but they strengthen the signal sent to Google.

What technical errors should absolutely be avoided?

Never leave decorative or advertising images in the main area of your template if they are loaded before the hero image. Google may interpret them as candidates. Use attributes role="presentation" or aria-hidden="true" for purely decorative visuals.

Avoid aggressive lazy-loading on the main image. If it is not visible on the first render or present in the initial HTML, Google may scan the page before its display and choose another visual. Load the hero image first, even if it means lazy-loading the rest.

How can you verify that Google displays the correct image?

Test your URLs in Google Search Console, URL Inspection section, and then view the screenshot taken by Googlebot. Compare it with the actual display in Google News by searching for the exact title of your article.

Set up regular monitoring: a script can crawl your recent articles and extract the image displayed in Google News via the API. If recurring discrepancies appear, it's a signal that your technical structure needs adjustment. These optimizations can be complex to implement alone, especially on custom CMS or heterogeneous technical architectures. Consulting a specialized SEO agency often allows for quick diagnosis of blockages and applying the corrections adapted to your specific context.

• Check the order of images in the source code (DOM), not their visual CSS position
• Implement schema.org Article with the image property pointing to the main visual
• Disable lazy-loading on the hero image or load it with absolute priority
• Exclude decorative and advertising images from the main stream via ARIA attributes
• Test each article in Google Search Console (URL Inspection) after publication
• Monitor actual display in Google News and Discover via manual search or script