Rated 4 out of 5 stars
Works well but would be nice if you could somehow intercept any JSON content type being opened in a tab and not just format urls that end in .jsonThis review is for a previous version of the add-on (0.9.3).
UPDATE: carcus88 has since discovered that he was returning application/x-json as the MIME type, which is why the extension was not being triggered.
@carcus88: JSONovich is triggered not by file extensions but by MIME types, and it is currently aware of the following:
Are there other JSON content types it should be aware of?