Cite an image used in a PowerPoint presentation or web project the same way you would cite it in a printed paper. See the example in our post on citing a screenshot or frame capture in a caption. As the post explains, if the image is merely illustrative, provide full publication details in a caption. But if you refer to the source of the image elsewhere, the caption should provide only enough detail needed to key to a works-cited-list entry. The list of works cited may be included as the final slide or as the last page of the web project.
The caption usually appears beneath the image. If you discuss the work from which the screenshot or frame capture is taken, the caption should act much like an in-text reference and provide the information needed to key to a works-cited-list entry as well as the time stamp where the screenshot or frame capture appears in the work:
Fig. 1. Still from Berrow, See the Quiet Beauty (2:23).
Work Cited
Berrow, Joya, director. See the Quiet Beauty of Farm Life on the Scottish Isles: Short Film Showcase. YouTube, uploaded by National Geographic, 6 Feb. 2018, www.youtube.com/watch?v=qUPbJq9TRiQ.
If you do not discuss the work from which it is taken and the screenshot or frame capture is merely illustrative, provide full publication information in the caption following our formatting guidelines.
https://style.mla.org/citing-screenshots-frame-captures/