Haldaug

This plugin adds support for providing licensing information for images uploaded in the media library. The user can input the Creative Commons licensing information in custom fields in the media post. The licensing information is displayed underneath the image in the wp-caption element.
<h4>Credits</h4>
This plugin is based on the code given in the tutorial ‘How to Add Custom Fields to Attachments’ by Guillaume Voisin: <a href="http://wp.tutsplus.com/tutorials/creative-coding/how-to-add-custom-fields-to-attachments/" rel="nofollow ugc">wp.tutsplus.com</a>

Creative Commons Tagger

Adds support for tagging images with creative commons licenses.

Kevin Batdorf

BjornW

Tarmo Toikkanen

Ahmad Bilal

hugosolar

possumbilities

Timid Robot

robmyers

The Creative Commons WordPress plugin gives authors the ability to license content with a Creative Commons license (<a href="https://creativecommons.org/choose/" rel="nofollow ugc">Choose a License</a>). With this plugin you can:
<ul>
<li>License your blog (single WordPress install)</li>
<li>Display license for the site, posts and pages</li>
<li>Prevent license changes per site (all pages on a site must use the same license)</li>
<li>License your WordPress Network (WordPress Multisite install)</li>
<li>License some of your sites differently in your WordPress Network</li>
<li>Prevent license changes in your WordPress Network (all pages on all sites need to use the same license)</li>
<li>License all your content with the same license (license per author)</li>
<li>License some posts, pages, or images differently from your default license (per content license)</li>
<li>License posts and pages by simply including CC Gutenberg blocks for each license required (Gutenberg License Blocks)</li>
<li>Display license information with “One Click Attribution” for images</li>
</ul>
The default license for the site used by the plugin is the Creative Commons <a href="http://creativecommons.org/licenses/by-sa/4.0/" rel="nofollow ugc">Attribution-ShareAlike (CC BY-SA)</a> license. This can be easily changed including attribution, depending on the permissions by a user with the role: superadmin, site admin or author.Selecting a license is straight forward. If you are not sure about what license to use, you can use the linked license chooser.
The selected license can be displayed as a widget or a footer or both at the same time. In Appearance > Widgets, the CC License widget can be dragged to any widget area like the side-bar and all other available areas. You can also include the license in footer. We recommend using the widget for better compatibility with your theme. You can use individual licenses in posts or pages using Gutenberg blocks.

Creative Commons

Official Creative Commons plugin for licensing your content. With Creative Commons licenses, keep your copyright AND share your creativity.

Creative Commons Tagger vs Creative Commons