For example, the WordPress Twenty Twenty-One theme creates a variant that is 1568px wide to display at the top of the post title. Some themes can also define a specific size for featured images. They are not accessible through the WordPress admin dashboard by default. Two more variants with 1536px and 2048px width were added in version 5.3. These properly named sizes are: Thumbnail (150px), Medium (300px), Medium Large (768px), and Large (1024px). Currently, WordPress generates images in four different sizes by default. When you upload an image to the media library, WordPress automatically generates thumbnails for it. Why You Should Change the Featured Image Size in WordPress? The variant of featured image shown here will usually have the largest size of them all. Some themes also show featured images in the body of the article, mostly directly below the post title. This can make the website more visually appealing and probably increase the click-through rate for those articles.
You will be able to show your post titles as well as corresponding featured images in that sidebar. For example, let's say you have a sidebar that shows your top five most read articles. They can be shown in all the places on your website where you link to an article. These images can also serve another important function, depending on the theme you have installed on your website.
This means that your featured image influences whether people will click through to your post from social media. The featured image along with the post title is the first thing that people see when they happen to find the links of your website shared on social media. What makes a featured image so important is the way it is used in WordPress. A featured image is one of the most important images that you can add to your blog posts.