We recommend the WP Super Cache plugin for WordPress sites that want to improve their image loading performance with a content delivery network (CDN) feature.
The plugin’s built-in CDN support, called “OSSDL CDN off-linker,” allows you to easily configure a CDN to serve your site’s static files, including images. This can significantly speed up the loading of your site’s images by serving them from a network of servers located around the world, rather than your own web server.
Additionally, the plugin’s caching features can further optimize your site’s performance by generating static HTML files for the majority of your visitors, who are not logged in, have not left a comment, or are not viewing a password-protected post. This can reduce the server load and improve overall site speed.
With its active development, large user base, and high ratings, the WP Super Cache plugin is a reliable and effective solution for improving the image loading performance of your WordPress site.