Build an X-Robots-Tag HTTP header and matching robots meta tag from current indexing and preview directives.
When to use X-Robots-Tag
Use the HTTP header when you need page-level indexing rules for non-HTML files such as PDFs or images, or when server configuration is a better fit than an HTML meta tag. Google states that rules used in a robots meta tag can also be sent with X-Robots-Tag.
Important
The URL must still be crawlable for Google to discover an X-Robots-Tag or robots meta rule. indexifembedded only has an effect with noindex. Google lists noarchive as historical and unused, so this generator does not add it.
Reference: Google Search Central robots meta and X-Robots-Tag specification.