The plugin makes it possible to download files from the media library and resize, crop, mask, blur it on the fly.

Better Images Crop made croping results same as width and height in media settings

Renamed to NextGEN Image Cropper Please visit http://wordpress.org/extend/plugins/nextgen-image-cropper/

Custom Image Sizes lets you specify exactly the size in which to display an attachment.

Crop and Resize Images Plugin allows you to easily modify WordPress uploaded images.

Forces image resizing and cropping to occur from the top of an image instead of the center whenever an image is uploaded and resized by WordPress.

Croppr is a php script written to resize images without actually storing the new images somewhere on the server. This is very usefull to create temporary thumbnails of images, as in photo albums or other applications. Croppr has to be called from within an img tag, and will automaticly return an image with the size you specify.

best solution for thumbnail editing

Paste screenshots and edit images directly in your wordpress admin. Adds Painterro button to visual editor for images editing. Absolutely free and open source.

Plugin allows you to manually crop all the image sizes registered in your WordPress theme (in particular featured image).

Hawk Vision plugin analyzes images in your media library with Google Cloud Vision AI and extracts the important area (crop hint) of the image that contain the subject.

An image field making it possible/required for the user to crop the selected image to the specified image size or dimensions

Manual cropping of images for different sizes

WP SmartCrop will crop your images on-the-fly to match your CSS, keeping the main focal point in view.

When using a theme with Theme Blvd Framework version 2.2+, this plugin allows you to change your theme's image sizes.

Select the crop position of your thumbnails.

ACF field that allows user to crop image to a specific aspect ratio or pixel size

Allows you to add/edit/attach/un-attach/sort the files attached to your WordPress posts all from the post editor.