There is no bulk discount. Each picture is a separate file on the server, so each one needs its own request. Count the rows: you should get four.
Look at the Type column: two rows say png and one says
svg+xml. The server tells the browser what kind of file it is
sending using a response header called Content-Type.
An SVG is not a photo — it is text describing shapes. Open images/logo.svg directly and view its source: it is readable, just like the HTML.