Purpose: to get an xml file of the Atom type, including the content of any page (including the blog) with base64 images.
What ways are found:
Use the REST API to retrieve data in JSON format (rest/api/content/11111?expand=body.export_view), further retrieve data in the Body property and get references via another one using the REST API (/rest/api/content/8686732/child/attachment).
This method is inconvenient by double accessing the page and the need to analyze the received data in JSON format.