Best Image Resizer Wordpress. Along with your media uploads you can also optimize thumbnails and retina images as well. The plugin is available in a free version as well as a pro version called smush pro.
Imagify is one of the more powerful wordpress image optimizers available on the web. This cloud hosted highly scalable tool can resize your images within seconds. The plugin is perfect for blog websites.
It performs server side resizing.
Optimus is a great wordpress image optimization plugin created by keycdn. Automatically resizes large image uploads. It is always best to resize and compress your image before uploading to a wordpress website. Smush formerly wp smush is one of the most popular image compression plugins out there.