Adam Capriola

Adds source name and URL fields for media uploads along with a shortcode for displaying image credits for all images within an entry, including its featured image.
WordPress natively doesn’t provide the ability to manage where you’ve pulled different media from, so this can be helpful in making sure you provide links back to the contents’ creators.

Image Credits

Adds source name and URL fields for media uploads along with a shortcode for displaying image credits.

meinsw

Do you use stock photos from big stock photo sites such as Fotolia, istockphoto or 123rf on your site? Then you probably need to include the image credits / author credits with each photo to avoid legal issues.
When searching a lightweight solution for this, you might have stumbled upon complex plugins.
Our approach was to keep this plugin as lightweight and simple as possible – to make sure every one of your wordpress contributors will understand how to use the plugin.
<ul>
<li>Our plugin simply adds a textbox below the text editor.</li>
<li>You can then use the shortcode [image_credits] to let WordPress show the full list of image credits, separated by the URL where the images are being used. Many webmasters choose to show the image credits on their imprint site, others create separate pages for it.</li>
</ul>
If you have any suggestions or questions, just ask. We will continue to update this plugin, while keeping it simple and as easy to use as possible.
Thanks to <a href="https://www.meinstoffwechsel.com" rel="nofollow ugc">meinstoffwechsel</a> for the financial contribution regarding development of this plugin.

Lightweight Image Credits Plugin

Will add a box to your backend edit pages to insert image credits. A shortcode will show all image credits, sorted by their origin site.

Image Credits vs Lightweight Image Credits Plugin