工欲善其事，必先利其器。

1. https://www.scamadviser.com/
2. https://builtwith.com/
3. http://whatwpthemeisthat.com/
4. Google Chrome Extension – What Font
5. Google Chrome Extension – ColorZilla
6. https://www.dnswatch.info
7. https://www.freepik.com/
8. Hexadecimal Color Picker  https://www.webpagefx.com/web-design/color-picker/
9. CSS庫鑑：https://css-tricks.com/almanac/
10. Text Editor: https://atom.io/
11. Google basic web page: Anatomy ​ of an HTML document
12.