에디터 글쓰기시 내용에서 style 없애고 등록하는 방법?

에디터로 글쓰기를 하면 속성을 따로 주지 않았더라도 여러가지 태그가 붙어서 복잡하게 나오잖아요,

이런식으로 엄청난 태그가 뒤로 붙어 버리네요 

br, img에는 왜 들어가는지??

스타일 기능을 안쓰려면(스타일 태그가 안붙어 나오게하려면) 어떻게 해야 할까요?

style="font: 12px/18px 돋움, Dotum, Helvetica, sans-serif; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; clear: both; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; -webkit-text-stroke-width: 0px;" 

<br style="font: 12px/18px 돋움, Dotum, Helvetica, sans-serif; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; clear: both; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; -webkit-text-stroke-width: 0px;"><br style="font: 12px/18px 돋움, Dotum, Helvetica, sans-serif; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; clear: both; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; -webkit-text-stroke-width: 0px;"><br style="font: 12px/18px 돋움, Dotum, Helvetica, sans-serif; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; clear: both; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; -webkit-text-stroke-width: 0px;"><br style="font: 12px/18px 돋움, Dotum, Helvetica, sans-serif; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; clear: both; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; -webkit-text-stroke-width: 0px;"><img title="a329d60331fc9bef4825eea9bb91759e_1466082822_9559.JPG" style="font: 12px/18px 돋움, Dotum, Helvetica, sans-serif; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; -webkit-text-stroke-width: 0px;" src="http://taesarang.com/data/editor/1606/a329d60331fc9bef4825eea9bb91759e_1466082822_9559.JPG">