Sometimes you have an SVG file and you want to reduce its size to the actual drawing. I have had a hard time finding a good way to do this programmatically, for batch processing or other.
Googling around, one method I've found is to use Inkscape. It can be scripted like this:
inkscape --verb=FitCanvasToDrawing --verb=FileSave --verb=FileClose *.svg
That takes a long time, opens up a GUI and isn't very flexible.
However, you can also get information about the bounding box with the
--query-all option to inkscape. Using this information, I wrote a python
script that uses rsvg and cairo to write the drawing to a file with the
Since it was easy, I also added an option to add a margin to the drawing.
Make sure you have Inkscape, python-rsvg and python-cairo installed
(on Ubuntu, try
sudo apt-get install inkscape python-rsvg python-cairo)
and then run
svgclip.py inputfile -o outputfile [-m marginpixels].
Regards, Simon Kågedal Reimer