Similar idea to this :)

[co0kie]

I also have the same concept about a year ago, only you run it manually in your console. It's a small javascript snippet code and I use box-shadow instead of outline. here http://codepen.io/co0kie/pen/wazBGx . Your chrome extension is very helpful for us devs. :)

[Rafael Rinaldi]

Hey @co0kie this is really cool too! box-shadow is also a good idea. We went with outline just because it was the simplest option to draw a box without affecting layout.

We're glad the Chrome extension is helpful 👍

Cheers.