Default Featured Image

This plugin lets you create custom image sizes for your site. Override your theme sizes directly on the Media settings page, regenerate thumbnails, an …

Improve the quality of re-sized images by replacing standard GD library with ImageMagick.

Prioritizes the loading of images and videos based on how they appear to actual visitors: adds fetchpriority, preloads, lazy-loads, and sets sizes.

Apply image or text watermarks to new uploads and existing Media Library images.

Simple, lightweight lightbox plugin for WordPress. Formerly the WP JQuery Lightbox.

Allows to add watermark to images automatically on upload or manually.