You can get preview a short URL or get its stats by adding ~ or + characters, respectively, to the end to the URL. Examples are given below. In addition, if you need to report a short URL as abusive, those options are available from the preview or stats pages.
Preview: http://hts.io/1~
Stats: http://hts.io/1+
You can now use HTTPS short URLs. Just prefix the short URL with https:// instead of http://. For example, you can go to https://hts.io/1 and your request (the part after the https://hts.io/ domain) is encrypted. Best if used with HTTPS long URLs. Other examples:
Preview: https://hts.io/1~
Stats: https://hts.io/1+