Chart & Diagram
http://www.showeet.com/
http://www.free-powerpoint-templates-design.com/
Icon
https://www.iconfinder.com/
http://iconmonstr.com/
http://www.iconsdb.com/
색상표
https://color.adobe.com
http://encycolorpedia.kr/
http://hornil.com/apps/colorscheme/
https://material.io/guidelines/style/color.html#color-color-tool
https://coolors.co/browser/picks/1
http://hornil.com/kr/design/DesignRes.html 색상표, 포토샵 자료 등등 모아놓은 사이트
그림 배경 삭제
https://burner.bonanza.com/
https://clippingmagic.com/
