InkscapeOptimizePath Save

An Inkscape extension that tries to make the longest paths possible

Project README

Inkscape Optimize Path

An Inkscape extension that tries to make the longest continuous paths

It converts the paths to a graph, converts the graph to an Eulerian graph and finds an Eulerian cycle. It was written for the Axidraw pen plotter to reduce writing time of graph-like drawings like Voronoi diagrams and meshes.

Example result


  • Copy the files optimizePaths.inx and in the Inkscape extension folder (On MacOS: /Applications/
  • Download the latest NetworkX package and copy the networkx folder in the Inkscape extension folder.
  • Download the latest Decorator package and copy the file in the Inkscape extension folder.


  • Make sure to ungroup everything
  • Make sure that the paths use only absolute coordinates (see trick below)
  • Make sure to not have transforms on the paths. You can use the Apply Transform extension to remove them
  • Select all the paths you want to optimize (currently only works with poly-lines)
  • Open the extension (Extensions > Generate from Path > Optimize Path)
  • Set the merge tolerance (0.1 should work in most cases)
  • Choose the Overwrite rule:
    • "Allow" means that the result will be a single path which might (probably) will have some overlapping edges.
    • "Allow none" means that the results will be multiple disconnected paths but there will be no overlapping edges.
    • "Allow some" is an in-between, overlapping edges are allowed, but only in short numbers. This is probably the best choice in most cases.
  • Press Apply

Trick to remove relative coordinates

  1. Change the preferences for 'SVG Output > Path Data' to always use absolute coordinates. This will only affect newly created paths, or existing objects for which a rewrite of the path data is triggered.

  2. For existing paths, use 'Edit > Select All in All Layers', and nudge the selection with the arrow keys (e.g. one step up and one back down again). This will trigger a rewrite of the path data in 'd' which will follow the changed preferences for optimized path data.

Dependencies NetworkX, a graph library, which depends on Decorator.

Open Source Agenda is not affiliated with "InkscapeOptimizePath" Project. README Source: Daekkyn/inkscapeOptimizePath
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2 years ago

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