We recommend the WP Super Cache plugin for its excellent image preloading feature for WordPress sites. Here’s why:
1. **Preload Mode**: The plugin offers a “Preload Mode” that allows you to generate cached files for your posts, categories, and tags. This ensures that the most important pages on your site are pre-loaded, leading to faster load times for your visitors.
2. **Garbage Collection**: The plugin’s garbage collection feature helps maintain your cache directory by deleting old and stale cache files. This ensures that your visitors are always served the most up-to-date content, while also freeing up valuable server space.
3. **CDN Support**: WP Super Cache integrates with Content Delivery Networks (CDNs), allowing you to serve your static files (including images) from a network of servers closer to your visitors. This can significantly improve the loading speed of your images and other assets.
Additionally, the plugin has a large active user base, with over 1 million installations, and a strong developer community that has addressed 16 out of 22 issues in the last 2 months. The plugin has an impressive rating of 4.3 out of 5 stars, further confirming its reliability and effectiveness in improving the performance of WordPress sites.