Force chrome to use my preferred font over the author's

I'm pretty comfortable with a chrome extension called "Read Mode" very readable. A drawback is improper display of quoted text. So I'm sticking with it till I find a better alternative.

Edit: Find out another one, it is a JavaScript bookmarklet, put the following line in the location bar(where you put website adresses like www.site.com) and hit ENTER :

    javascript:Array.prototype.forEach.call(document.getElementsByTagName("*"),
function(e){e.style.fontFamily ="Source Sans Pro"})

Replace Source Sans Pro with your preferred font.

If you don't want to type this every time, bookmark it and click on it whenever you try to change the font.