(from https://github.com/fieldmuseum/nextfield/wiki/Images-and-image-treatments)

• Googledoc

Banner images include:

• Homepage banners like this type of image at the top of the homepage - www.fieldmuseum.org
• Background or CTA banners like this background or this CTA banner in the body of pages like www.fieldmuseum.org/educators/learning-resources

Recommendations:

• Formats: WEBP, PNG or JPG
• Aspect ratio: 3x2 landscape orientation
• Dimension: 2000px or smaller on the longest edge
• File size: 500KB or smaller
• Permissions
  • Verified copyright holder & license
  • Verified credit line

• Formats: PNG (preferably)
• Dimension: 550px by 550px or smaller

To provide appropriate creator & rights info about an image or other type of media file, fill in the following for that file in the Media area.

For example, if showing an image of a book cover:

• creator = [Author, Illustrator, &/or Designer of the book cover]
• copyright = (c) [Copyright holder - likely the author or publisher]
• description = "Book cover for [title]"

e.g. -- For the Cow that Went Oink:

• creator = Bernard Most
• copyright = (c) Bernard Most
• description = "Book cover for The Cow that Went Oink"

For Dato pages that need to display books covers, whoever is requesting/writing the content should provide a book citation that can be included at the end of the body text.

If MLA/Chicago format (e.g. here) is do-able, let's stick with that -- otherwise / at minimum, including book-author, book-title, publisher, publication-year from worldcat.org covers most of it:

e.g. searching for The Cow that went Oink ~> https://search.worldcat.org/title/1000504380

& this citation: Most, Bernard. The Cow that Went Oink., by Most, Voyager Books/Harcourt, Inc. 2003. ISBN: 9780152047634