Sometimes Google pulls images from the content and adds them to specific search results.
Here is an example where Google added the image to the featured snippet:
The same goes for regular organic results:
Here, at DataForSEO, we are working towards providing the closest depiction of search results in JSON format, that’s why we’ve added those images to the response of our SERP Advanced API.
You will find the field images in the response for both featured_snippet and organic items:
"images": [
{
"type": "images_element",
"alt": "Image result for seo competitors analysis checklist",
"url": "https://www.searchenginejournal.com/seo-competitive-analysis-the-definitive-guide/273509/",
"image_url": "https://api.dataforseo.com/cdn/i/06251618-1535-0139-0000-1b5ffc91bbd4:0"
}
]
Interested?