Content-Disposition
Whether the browser should show the body or download it, and the file name to save it as.
Explained
Examples
Example
Content-Disposition: attachment; filename="report.pdf"Watch out
For file names with non-ASCII characters, add filename* with UTF-8 encoding: filename*=UTF-8''r%C3%A9sum%C3%A9.pdf.
Defined in RFC 6266.