If you're free for some time to fill what you did in coding for one year(Developer Survey) & Earn cool Gifts Hurry up.

Survey Link

As I know many of them using http://jsoneditoronline.org/ to view or edit the JSON files.

But as I observe ads are irritating some times, as they showing irrelevant ads.

I started using the JSON editor Extension from chrome Store
JSON editor Chrome Extension Link

For fast usage of JSON editor Extension bookmark this to chrome tabs