This plugin combines two techniques to improve website performance by managing how images are delivered. It is for site administrators who want to reduce page load times and data usage for their visitors without manual image optimization.

• Responsive Image Handling: The plugin automatically modifies image markup to use the srcset and sizes attributes. This ensures visitors download an image size that matches their screen, preventing the download of unnecessarily large files.
• Lazy Loading Implementation: It integrates the lazysizes script to delay the loading of images until they are about to enter the viewport. Images outside the initial view are not loaded immediately, saving bandwidth and speeding up the initial page render.
• Automatic Markup Conversion: The core function processes post and page content, converting standard img tags. It changes srcset and sizes to data-* attributes, adds a lazyload class, and removes the src attribute to enable the lazy loading behavior.
• Comprehensive Coverage: It extends functionality beyond main content to also modify gallery images and post thumbnails using specific filters like wp_get_attachment_image_attributes and post_thumbnail_html.
• JavaScript Fallback: The plugin generates noscript elements as a fallback for each modified image. This ensures images remain visible even if a visitor's browser has JavaScript disabled.