Media WordPress Plugins
External Featured Image
Add an external URL as your featured image on posts by just copying in a link, and quickly preview the image right in the post editor.
Imsanity
Specify a maximum size for images uploaded to WordPress. If any image exceeds that size, it will automatically scale it down, on the fly.
Lazy Load for Videos
Delay the loading of embedded videos from YouTube and Vimeo so that your page loads faster with increased performance and custom options.
BJ Lazy Load
Add a lazy loading javascript file to your WordPress site for images, iFrames and content, to increase performance and speed. Responsive and Retina support.
SEO Slides
Create SEO presentations that you can embed them in WordPress posts and pages using a shortcode. Slides can be edited and arranged using a custom post type and a WYSIWYG editor.
Overwrite Uploads
WordPress doesn't automatically replace images with the same filename when they are uploaded. This plugin overrides that and lets you override uploads automatically.
EWWW Image Optimizer
Automatically compress and optimize images that are uploaded to WordPress on your own server. No need to use external third party services, and easy to customize.
MaxGalleria Lite
Create galleries in WordPress with lightbox functionality, custom templates, styling, captions and more. Organize galleries into groups then output them with a shortcode.
Instagrate
Easily pull a stream of photos from your instagram account that you can display on your WordPress site in the form of galleries or individual posts with support hashtags and comments.
Iframely Responsive Embeds
Take the oEmbed functionality of WordPress and make it automatically responsive. It uses the Iframely API so there is support for literally hundreds of link types, including YouTube, Vimeo, TED, and more.
Google Doc Embedder
Embed a variety of filetypes (PDF, DOC, CSV, etc.) right in the browser using the Google Viewer API. Embed documents with a shortcode or an extra button in the WYSIWYG Editor.
Attachments
Associate posts with media attachments and metadata, then output this data in your theme files using an extensive API with several functions and a custom Loop.