The localStorage read-only property of the window interface allows you to access a Storage object for the Document's origin; the stored data is saved across browser sessions.| MDN Web Docs
Today we're launching a tiny beta tool called Quack. It is a simple utility for you to share a beautifully rendered version of any markdown text. Type away in our simple editor. When you're done writing, click Share to grab the link for sending to others. There are no servers in this beta. Everything you write is stored in the URL, so every time you change your writing the URL changes as well.| Good Enough