This may be slightly off-topic, but the task you describe here is easily done with ImageMagick.
http://www.imagemagick.org/script/formats.php
You can type "convert filename.svg filename.png".
If you want to convert a bunch of files:
for f in ~/pictures_svf/*.svg; do f1=`basename $f .svg` convert -resize 16x16 $f $f1.png done
The other salient point is that SVG is a vector graphics format, while PNG is a bitmap format, so you'll lose quite a bit of quality if someone zooms in.
Alex
2. Download ImageMagick: http://www.imagemagick.org/script/formats.php
Daniel