JSON response in a .json file

<div> Hi Guys,

Currently I'm displaying my JSON response in a .apsx page, how can I adjust my response to create a .json file rather then .aspx page?
you might get a better idea of what I mean by clicking on this example link:
http://mycouncil.solorient.com.au/Horizon/weddin/atdis/1.0/applications.json


Thanks
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