Add More Automatic Image Sizes to the WordPress Media Library
Do you ever feel limited when adding an image to a post or page with only thumbnail, medium, large and full sizes to choose from? These are handy if they work for your theme, but sometimes the height or width can be awkward. Install the Additional image sizes (zui) plugin and you’ll be given a new menu item under Media >> Images Sizes where you can create custom image sizes that will be added to the default sizes.
Now you can resize to your custom sizes with ease! This plugin is a fork the original Additional Image Sizes plugin. Additional image sizes (zui) enhances it, fixes a few bugs, and is available for free in the WordPress plugin repository.