If no license then there is no license, which is equivalent to all rights being reserved, which means what Saagar said: no one can redistribute, modify, or dupl

If no license then there is no license, which is equivalent to all rights being reserved, which means what Saagar said: no one can redistribute, modify, or duplicate it for any purpose (unless there is some fair use involved, and with the proviso that you assuredly aren't going to have an issue with the temporary copy made by your browser as there are going to be some implied rights involved with that other person having gone out of their way to publish it in a place where you came across it knowing full well how browsers operate).