A lot of WordPress themes use featured images for certain theme elements like post thumbnails or image slideshows. Our themes usually define several image sizes for the featured images. WordPress will crop your uploaded image to all these sizes when you set a featured image. The theme will then use these different sized images on various locations in the theme. For example: You upload and set a featured image of x pixels. From that image WordPress generates a thumbnail image with 85 x 85 pixels for archive pages, a x pixel image for single posts and a x pixel image for the featured posts slideshow. You can change the default defined image sizes with the Simple Image Sizes plugin. You can download the plugin on wordpress. They are added below the default Media settings of WordPress Core.
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What is a WordPress featured image?
What catches your attention while browsing online? Is it an attractive image or a catchy headline? And if you are running an online store, good quality images really do the trick! What would you make of an image that is blurry, stretched, and poorly designed? Your featured image sets the tone from the outset. Getting all those little things right, such as the perfect image dimension or optimizing the image size , helps bring out the perfect featured image. What is a WordPress featured image? Why have one in the first place? How do I change the default featured image?
WordPress Image Sizes Explained
Images are vital components of every website. Before you start questioning the importance of images, just try to imagine your favorite blog or website without one. Would you be as much interested in reading about technology, cars, food, or fashion and makeup if the website contained no images? Internet connections were too slow, and no one could load dozens of pictures per page. The same principle can apply to a personal blog or your website. They are way more important than you might even imagine. Although a featured image is just another media file that you can add to WordPress, it deserves special treatment.
Using the right images in the right size is important for the look and performance of your website — the two things that will have the biggest impact on whether your business, blog, or portfolio is a success. Because of its smaller file size and high quality for photos and images with lots of colors, JPEG is the preferred format in the majority of cases. Choosing the right format for your image matters because it affects the quality of the image and speed of your site.