다음의 링크는 HTML HEAD 설정에 도움이 되는 자료들 입니다.
Head
https://developer.mozilla.org/ko/docs/Learn/HTML/Introduction_to_HTML/The_head_metadata_in_HTML
Favicon
https://webdir.tistory.com/337
Meta
https://developer.mozilla.org/ko/docs/Web/HTML/Element/meta
https://aboooks.tistory.com/339
Meta Viewport
https://aboooks.tistory.com/352
https://aboooks.tistory.com/353
Open Graph
http://blog.ab180.co/open-graph-as-a-website-preview/
Canonical
https://en.wikipedia.org/wiki/Canonical_link_element
https://webisfree.com/2014-09-24/검색엔진-최적화-방법-canonical-태그의-중요성과-활용-방법
https://webmasters.googleblog.com/2013/04/5-common-mistakes-with-relcanonical.html