Find out where shortened URLs lead to without clicking
http://jump-to.link/jump/to?url=http%3A%2F%2Fcryosight.wz.cz%2Fcsi%2Fcsi.php%3Fid%3Dguestbook
https://jump-to.link/jump/to?url=http%3A%2F%2Fcryosight.wz.cz%2Fcsi%2Fcsi.php%3Fid%3Dguestbook