Easy and effective

With the addition of the ability to lazy load images, this plugin is definitely a no-brainer. Installed on every site I make, it optimizes images and keeps the site loading quickly. Relatively clean admin interface, great functionality. I have used the premium version as well, and can say the additional cost is worth it in some situations. The free version is the sort of thing that should be included in core, but glad to support and use this plugin.