Extension or built in?

[craigfrancis]

From Ruben (Microsoft): we're looking into browser extensions at some point in the near future.

[craigfrancis]

From Addy Osmani: I wonder if this could be done as a DevTools extension.

[craigfrancis]

A good idea for an initial implementation, but the intention is to educate developers (which is less likely to happen if installed separately).

[jodosha]

@craigfrancis Thanks for your proposal, this is brilliant. I really hope that vendors will eventually implement this.