Neat thanks!

You can generate HTML (and from that png or whatever) with http://www.pixelbeat.org/scripts/ansi2html.sh like

    $ COLUMNS=80 timeout 1 htop > t.ansi
    $ ansi2html.sh --bg=dark < t.ansi > t.html

I've requested a -b, --batch option for htop, to simplify this mode of operation. https://github.com/hishamhm/htop/issues/282 Then you could just:

    $ COLUMNS=80 htop -b | ansi2html.sh ...