Make Offline Mirror of a Site using wget
https://www.guyrutenberg.com/2014/05/02/make-offline-mirror-of-a-site-using-wget/
Sometimes you want to create an offline copy of a site that you can take and view even without internet access. Using wget you can make such copy easily:
wget --mirror --convert-links --adjust-extension --page-requisites
--no-parent http://example.org