The focus of this guide, photo or image cropping and resizing, are features that are available as part of many image editing programs, but standalone applications often offer additional utilities, such as the ability to handle multiple files at one time.
In computer graphics and digital imaging, image resizing is sometimes referred to as rescaling. With vector graphics, the graphics primitives that make up the image can be scaled through geometric transformations, and without loss of image quality. With raster graphics, however, a new image with a higher or lower number of pixels is generated when the image is scaled; when the number of pixels is decreased, as occurs when reducing the size of the image, there is usually a visible loss in quality.
Various technologies are available, and some image formats can be more successfully scaled than others. Links to software applications designed for photo or image resizing are appropriate for this category. More generalized editors that include features for resizing graphics should be listed in the Image Creation & Editing category or another more specific category, however.
Cropping refers to the removal of unwanted outer layers of photographs or images. Usually, a photo is cropped in order to remove portions of the photo that may distract from its focus, isolating the subject from potentially distracting background images. It may also be used to magnify the primary subject. When cropping is used to trim the top and bottom margins of the photograph, the result resembles a panorama, although a panorama is usually accomplished through special camera designs or configurations, which may be an option in some cameras.
Unless the original photo has been saved, it isn't possible to undo the cropping of an image.
Topics included in this guide refer to software products designed for photo editing or cropping, although the software may be used to crop other graphic images, as well.
 
 
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Supporting macOS and Windows, BatchCrop allows for easy cropping, resizing, and modification of images. Using the software, users can process a batch of files at once, applying multiple actions. Other features include automatic intelligent cropping, parameterized cropping, both automatic and manual dust spot removal, automatic tilt corrections, resizing, arbitrary rotation, and flipping. Access to its full features requires the purchase of a license. A tutorial is included.
https://batchcrop.com/
Created by Mazaika, Click 2 Crop was designed to be a fast and easy photo editor, with a focus on cropping, resizing, and optimizing digital photographs, allowing the user to preview results while the image is being edited. The features available for its Windows and Mac versions are listed and illustrated with screenshots. Fifteen-day trial versions may be downloaded from the site, and the full version may be registered. Other products from the same company are also featured.
http://www.click2crop.com/
Based in Switzerland, the web-based cropping tool is based on algorithms that are designed to capture the essence of good photographic composition, which find the cropping angle that offers the best balance of structural components and color, while retaining as much of the content as possible. Users may also opt to make their own cropping selections. Documentation is available for those who may wish to integrate Coppola technology. The site is available in English and German.
https://croppola.com/
The software runs as a Photoshop plugin for recent versions, either the PC or Mac versions, and is also compatible with the license keys for PortraitCrop. The cropping program is made to crop faces from photographs or portraits and is capable of recognizing the top of bows, graduation caps, tall hair, or anything else that the subject may be wearing on his or her head. Its features are described, and demonstration videos are included, along with tutorials. Purchases may be made online.
https://facecrop.com/
Offering a fifteen-day trial version, regular and custom versions, and other special offers, the face cropping software tool uses proprietary facial alignment technology to crop large batches of images. The application will locate the subject’s facial features and apply a uniform crop according to pixel dimensions defined by the user. Designed for professional photographers or businesses, screenshots and sample images are used to define the software’s features.
http://www.frameaface.com/