There are three types of images you can use in your presentations:
Images in the public domain. These have no copyright restrictions, so you can use them whenever and however you want.
Images with a license for use. These licenses typically allow you to reuse the image, but some may have additional restrictions, such as no modification, no commercial use, or attribution is required.
Images without a license for use. These are protected by copyright, so you'll need to argue that you're using "Fair Use", a copyright exception, in order to use the images. There's no clear cut right or wrong answers on whether your image is fair use, but you can learn some guidelines with the resources linked below. You can also email or book an appointment with one of us.
Public Domain Images
Images from these sources are in the public domain, can be modified, and do not require attribution.
Founded in 2011, The Public Domain Review is an online journal and not-for-profit project dedicated to the exploration of curious and compelling works from the history of art, literature, and ideas.
A collection of reusable images. The license on each image differs, however, so some may require attribution or prohibit modification. Some are in the public domain.
An extensive library of free stock photos, images, and audio, available for free use. All Openverse content is under a Creative Commons license or is in the public domain.
The Code of Best Practices in Fair Use for the Visual Arts is based on a consensus of professionals in the visual arts who use copyrighted images, texts, and other materials in their creative and scholarly work and who, through discussion groups, identified best practices for using such materials