When you create articles based on HTML instead of InDesign documents, you can set up a resources folder for sharing images, scripts, and CSS files among multiple HTML articles. The HTMLResources.zip is also useful to linking to PDF files, images, and HTML files to display the content in the in-app browser.
The resources file must be named “HTMLResources.zip.” You can import only one HTMLResources folder in a folio. The HTMLResources.zip file is not an article that can be previewed. For information on creating HTML articles, see Import HTML articles.
To create the .zip file, select the contents of the HTMLResources folder, not the folder itself.
If several people are working on HTML articles, make sure that they have an up-to-date copy of the HTMLResources folder so that they can refer to it.