I have been using the bookmarklets provided by squarefree.com (https://www.squarefree.com/bookmarklets/webdevel.html https://www.squarefree.com/bookmarklets/web

I have been using the bookmarklets provided by squarefree.com (https://www.squarefree.com/bookmarklets/webdevel.html https://www.squarefree.com/bookmarklets/webdevel.html) for about 8 or 9 years now. Cross browser, works on the current page, dead easy.