Citation, Documentation of Sources

Q. How would you format a credit line for a screenshot? Do you credit the person who took the screenshot or the website where the screenshot is from? For example, if a writer takes a screenshot of a notice on a website, do you cite the website, the writer, or both?

A. Unlike a photographer, the person who creates a screenshot doesn’t usually get credit. But if someone has added annotations or the like that aren’t part of the captured image, that fact should be made clear. For example, the caption and credit for this image—

A screenshot that shows the entries for the words "percent" and "pseudo" in the hyphenation guide under paragraph 7.96 in the 18th edition of The Chicago Manual of Style.

—might read as follows:

The updated hyphenation guide includes linked cross-references to other terms and sections in the table. Reproduced by permission from The Chicago Manual of Style Online, 18th ed. (University of Chicago Press, 2024), 7.96; arrows added by the author.

See also CMOS 3.21–29 (for captions) and 3.30–38 (for credits).

[This answer relies on the 18th edition of CMOS (2024) unless otherwise noted.]