Webpage screenshot

[Polytropon]

I'm searching for a simple way to create a screenshot from
a web page, i. e. convert the rendered page into a PNG (or
something similar) graphic format. This is intended to be
used for usability and design visualization where different
components of the web page can be "colored" using Gimp to
show their structure by "inking" the different elements.

The idea of taking a screenshot from the web browser may
look sufficient at first, but it is problematic when the
web page doesn't fit horizontally or vertically. This
sometimes doesn't even work when using the browser in
"total fullscreen" (which is 1400x1050 or 2800x1050 here).
Using the browsers "print to PS" functionaliy also add
pagination that is not desired, and "continuous form
printing" export doesn't exist.

How would you suggest to solve this task? CLI utilities
are welcome - the less interaction, the better. It doesn't
matter if the result is a 800x10000 px image with 300 px
white margin left and right. :-)


-- 
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...