Do not submit items of a confidential or classified nature to this site.
The private option on submissions indicates that it will not be released to the public and will not be made generally available. However, it may be shared with security researchers and trusted individuals whose goal is to improve detection of threats. The privacy of submissions depends upon the user keeping the "Submission Permanent Link" a secret, therefore do not post the link publicly if you want to keep it private.
If you need true privacy, you should run jsunpack-n, which is the engine behind jsunpack and it runs locally.
Thanks for using jsunpack!