Created out of frustration this morning with finding which breakpoints and media queries were affecting elements on a new responsive design.
It simply adds an overlay of the current view-port width so you can easily tell which break-point to edit.
To install, drag the following link to your bookmarks bar: [ResponsinatorBookmarklet]
Compiled with the Google Closure Compiler- http://closure-compiler.appspot.com/home
I actually removed this from my bookmarks recently because Chrome Dev Tools now does the exact same thing automatically 🙂
Thanks ‘Gus! Yeh I know, it’s been in stable for a while now but the bookmarklet can still be useful for other browsers.