How to view man pages in a web browser?
One way to do this is to put the following command in ~/.profile:

export PAGER="col -b  | open -a /Applications/Safari.app -f"


The PAGER environmental variable controls what program man uses to display man pages. the col command removes all of the backspace-formatting from the man page. The open command saves the output as a temporary text file and opens it with Safari.app.

Or you can edit the PAGER variable in /private/etc/man.conf. You could also probably edit the NROFF variable and eliminate the need to use col -b. See the man page for man.conf.