Quine
http://www.ipsj.or.jp/07editj/promenade/4703.pdf
https://mametter.hatenablog.com/entry/2020/08/05/150835
https://twitter.com/David3141593/status/1573218394358386688
自分自身の
MD5
hashを表示するpng
https://gyazo.com/bb7a4c7a42cff336a25d84441e39d813
https://secretgeek.github.io/html_wysiwyg/html.html
htmlのquine