How to change featured image size in WordPress?

The size of a featured image depends on several factors, such as the theme, layout, and design of your WordPress site, as well as the dimensions and quality of the original image.

However, a good starting point for your WordPress featured image size is 1200 x 628 pixels. These dimensions tend to work well across WordPress themes and page layouts, and also look good when shared on social media feeds

To change your featured image size in WordPress, you can follow these steps:

1. Go to Settings > Media in your WordPress dashboard.
2. Under Image sizes, you can adjust the default values for Thumbnail size, Medium size, and Large size. These are the sizes that WordPress will automatically generate for every image you upload.
3. If you want to add a custom size for your featured image, you can use the add_image_size() function in your theme’s functions.php file. For example, you can add this code to create a new image size called featured with the dimensions of 1200 x 628 pixels:

add_image_size( 'featured', 1200, 628, true );

The last parameter true means that the image will be cropped to fit the exact dimensions. You can set it to false if you want to preserve the original aspect ratio of the image.

4. To use your custom image size for your featured image, you can edit your theme’s single.php file (or any other template file that displays the featured image) and replace the default size with your custom size. For example, you can change this code:

the_post_thumbnail( 'large' );

to this code:

the_post_thumbnail( 'featured' );

5. Save your changes and refresh your site. You may need to regenerate your thumbnails using a plugin like [Regenerate Thumbnails] to apply the new size to your existing images.

By following these steps, you can change your featured image size in WordPress and optimize it for your site’s appearance and performance. You can also experiment with different image sizes and formats to find the best fit for your site. For more information on WordPress image sizes, you can check out these resources:

• Beginner’s Guide to WordPress Image Sizes (+ Best Practices)
• WordPress Image Sizes: A Quick Guide
• Everything You Need to Know About WordPress Image Sizes