AEM provides a very limited ability to edit an image. We strongly encourage users to edit their images prior to uploading to the DAM.
For a free image editing tool, we recommend users utilize 3rd party online image editing sites such as Pixlr, Adobe Photoshop Express Editor or Photopea to edit their images.
You can also reach out to us to help you resize, crop, or edit any images that you want to use within AEM.
To find out more about the best image size for various components, please consult the Recommended Image Size page.