Note: This chrome plugin is just for me to save some pages. It's not widely for common useage. BUt you can change it with you suitable.
Main function is in js/clean.js and js/popup.js, before i try to save pages as pdf with printer, i used jsPDF, but there something was wrong, i can't make it convert to pdf from html(text isn't problem).
Also, It's funny to learn how to write a chrome extension.