Christiaan Conover

Featured Image Caption makes it simple to show a caption with the featured image of a post or page. It works seamlessly with most themes, with no coding required. If you like to mess about in the code, it supports that too.

Featured Image Caption

Easily add and display a caption for the featured image of a post.

Ricardo Moraleida

Default Values for Attachments gives you the ability to include default titles, captions or descriptions for every image uploaded using the Media Uploader.
You can still set individual values for field of every image. And you can unset defaults anytime.

Default Values For Attachments

Set default Title, Caption or Description for every image you upload.

Featured Image Caption vs Default Values For Attachments