Just like you pass tags in your WordPress blog posts; you can also tag images using a free WordPress plugin called WP Media Tagger. The plugin is extensively configurable and comes packed with a bunch of features enabling WordPress media tagging and search & media taxonomy etc.
Cloudinary.Com has launched a free WordPress plugin that lets you host your WordPress images on cloud using a fast CDN all free of cost. The service automatically uploads, normalize, optimize and back up all your WordPress site images to its cloud and makes you free from messing around with image editors; Cloudinary can manipulate and transform your images online on-the-fly and you can manage everything directly from your WordPress admin area dashboard; resulting images are cached, optimized and delivered using a fast content delivery network (CDN).
This tutorial is about extending shortcode functionality of popular Media Tags plugin. Tag listings available by
[media-tags media_tags="my-tag"] are intended only for images and other attachments produce invalid list items. This is where Multi-Media-Tags comes to the rescue. The attachments MIME type (like image/png, video/ogg or application/json) decides how to appropriately format the attachment.
PhotoPress is a free WordPress plugin that allows you to add additional meta-data in your WordPress media library images. You can add Cameras, Lenses, Photo Cities, Photo States, Photo Countries, Photo People, Photo Keywords, Photo Sizes, Photo Collections.
You can easily assign categories to media using a simple, and searchable category meta box. Afterwards you can use gallery shortcode for displaying category galleries inside your posts and pages. Also you can add feature to tag your media/attachments from Media Management screens.