hs.protolambda.com is a free online service that lets you view and share Hearthstone Decks using the new code system added in the latest update.
hs.protolambda.com/ followed by any hearthstone code in your browser
and it will immediately show you the deck as it would be in game.
This allows you to quickly view deck codes you see online and also lets you easily share your own decks, without needing to send clumsy screenshots.
And you can rename your deck and also view the cards by hovering over them! Much better than a screenshot! But that's just the beginning, many features are yet to come.
For those of you who are interested in the technical aspects, here is a quick overview of our software stack: