[jpsalm]

The output html is getting picked up by xdg-open and directed into Firefox -- anyway of redirecting the output to lynx e.g. ./rdrview '<site>' | lynx

[eafer]

I've seen this problem with Fedora, the default mailcap settings are not sane. On Debian it worked fine by default. If you don't want to edit your mailcap, you can use the -B flag to pick a browser, like the sibling comment said.

[raimue]

Yes, the man page documents the option to specify the browser on command line with -B/--browser or in the environment as RDRVIEW_BROWSER. By default it parses your mailcap preferences for text/html.