Looking for a tool to convert something like
M10 20L0 0 5 5 10 10
from absolute to relative, something like:
M10 20l-10 -20 5 5 5 5
Pay attention to upper case L for absolute and lower case l for relative?
A tool called Inkscape was found that allows you to preserve the relative.
For this:
TA-DAH
In the untick path data section Allow relative coordinates or choose to always use absolute coordinates depending on your version of inkscape.
This will only affect newly created paths or existing objects for which rewriting of path data is initiated. For existing paths
Select Modify , then Select all in all layers .
This works for inkscape 0.48
In the settings under "SVG Output", set the "Path Line Format" to "Absolute" and save as a regular SVG. You may need to push the object, so Inkskape will reset the 'd' attribute for the path.