Playing any Z-machine story on Parchment is pretty easy, thanks to a simple web service located at zcode.appspot.com that converts a Z-code file located anywhere on the internet to a JSONP representation that Parchment can understand.
Simply upload the Z-code file to a server and enter the URL to the story in the field below.
Alternatively, you can also convert the Z-code to JavaScript yourself instead of relying on zcode.appspot.com by using zcode2js.