Include Pages and Files
The Include options let you add extra pages, files, and directories to your static site that Simply Static might not pick up on its own while crawling. You'll find them in the Include section of your Simply Static settings.

Additional URLs
Add any URLs you want in the export that Simply Static wouldn't otherwise discover, for example a page that isn't linked from anywhere else on your site. Enter one per line.
You can enter full URLs or regular expressions. See Using regular expressions below for the regex syntax.
Additional Files and Directories
Add individual files or entire directories to the export, one per line. Use the absolute path on your server, not a URL. You can point to a single file, a whole directory, or match many files at once with a regular expression.
Use the Copy home path button to grab the absolute path to your WordPress installation as a starting point.
Using regular expressions
Both fields above accept regular expressions as well as literal values. This is handy when you want to include everything that matches a pattern instead of listing each item by hand.
To use a regex, wrap your pattern in forward slashes. You can add flags after the closing slash, such as i for case-insensitive matching. Put one pattern per line, and you can freely mix literal entries and regex patterns in the same field.
A few examples:
/\/blog\/.*$/iincludes every URL under/blog/./\.pdf$/iincludes every PDF file./wp-content\/uploads\/reports\/.*/includes everything in thereportsuploads folder.
Include RSS Feeds?
Turn this on to add the RSS feed URLs WordPress creates for your posts to the export. It's off by default.
Include Rest API?
Turn this on to include the WordPress REST API JSON endpoints in your export. It's off by default.