
Select one image per attached post in the Media Library's List view, choose "Set featured images", then click Apply.
Set featured images for several posts without opening each post’s editor. In the Media Library’s List view, select your images, choose “Set featured images” from Bulk actions, then click Apply.
Each selected image becomes the featured image of the post shown in its “Uploaded to” column. Existing featured images are replaced. The familiar “Use as featured image” row action is also available for individual images.