Purpose: The Sitecore CMS provides a basic image editor that can be used for simply cropping, resizing and rotation tasks. It is not a direct replacement for Photoshop, but can be used in situations where Photoshop is unavailable.
The Sitecore CMS photo editor is available via the media library. Select an image within your department or office, and then click “Edit” from among the options available under "Media."
This will launch a popup containing the editor that will need to be resized. Drag the lower-right corner of the new window to resize to an appropriate dimension.
As with any content item in the CMS, the Save, Undo and Redo menu choices are available. New menu options particular to the image editor, however, are the Crop, Resize, Vertical, Horizontal and Rotate options.
Crop can be used to reduce the “viewable area” of a particular image and is useful for remove unnecessary components of a photo in favor of areas to which you would like to call attention.
Resize is extremely useful, as it allows the editor to (generally) reduce the size of a particular image to a more appropriate dimension for use on the web. Keep in mind that while this tool will also allow you to increase an images size, it will not increase resolution. When resizing an image down in dimension, you will also be reducing its file size, allowing for the image to be displayed on the users system quicker.
The options for flip will reflect an image across an arbitrary boundary.
The rotate options are often used to orient portrait shots and/or landscape shots properly, where the photographer had to rotate their camera to capture the subject of the image.
Among these options, the only tool which does not immediate implement some action is crop. In this circumstance, the first click on this tool button allows for the editor to drag a selection box within the photo editor. A second click of the crop button implements the crop and removes the region outside the cropped area.
Note: "Saving" images only saves a copy to the development version of web content. In order for your edits to be expressed to the web, you must publish your changes. Also note that image tags generated by the CMS will contain height and width attributes which may change as a result of any editing taking place in the photo editor. These will need require update, which means that for the sake of efficiency, any photo editing should take place prior to inclusion of the image within content items (web pages).