You're speaking in pictures not in technical terms (HTTP)

save_content saves the content of the page that you ->get, as the documentation documents

If you want download content of some other url and save as file.csv, you gotta write different code

https://metacpan.org/pod/WWW::Mechanize::FAQ#How-do-I-save-an-image-How-do-I-save-a-large-tarball

In reply to Re: Using WWW::Mechanize to save contents of downloaded file by Anonymous Monk
in thread Using WWW::Mechanize to save contents of downloaded file by perl_help26

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