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svg-stroke-to-path

Illustration explaining what this does

Shell script to convert strokes in an SVG to paths using Inkscape's CLI.

Why?

I needed a tool that converts strokes into paths for a font automation tool. Long story short, FontForge really does not like strokes.

The svg-stroke-to-path script makes batch-processing hundreds of SVG files easier, and also adds the ability to select specific objects using CSS selectors.

How does it work?

svg-stroke-to-path uses Inkscape's command-line-interface (CLI).

Behind the scenes, it is running the following command, just with added functionality.

inkscape \
  --actions="select-all:all;object-stroke-to-path" \
  --export-filename="myFile.svg" \
  myFile.svg

Requirements

Inkscape 1.2 or newer.

Note: The script has only been tested on Inkscape versions:

  • Inkscape 1.3 (0e150ed, 2023-07-21)

For older versions of Inkscape, specifically older than 1.2, checkout the code from an older version of svg-stroke-to-path.

Installing

After git cloning this repository, the script can be run locally from the directory by running:

./svg-stroke-to-path ...

To run it from anywhere, run the following command to install the script into /usr/lib/bin:

make install
svg-stroke-to-path ...

Usage

$ svg-stroke-to-path -h

Usage: svg-stroke-to-path select_attr file ...

  select_attr can be
    * 'all' to select all elements

  or, it can be a variety of CSS selectors, for example:
    * 'path' to select only <path> objects
    * 'rect,circle' to select both <rect> and <circle> elements
    * '[stroke="#000000"]' to select elements with specific attributes
    * 'path[stroke="#000000"]' to select only paths with specific attributes
    * '[stroke="#000000"][stroke-weight="0.5"]' to select multiple attributes

Note: On macOS, running this command will launch Inkscape in the Dock for a split second. This is the default behavior Inkscape's CLI.

Examples

# To convert all strokes to paths in a single file
svg-stroke-to-path all myFile.svg

# To convert all black strokes to paths in all SVG files in a directory
svg-stroke-to-path '[stroke="#000000"]' *.svg