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Ogr2ogr is the standard way to convert files from Shapefile to GeoJSON on the command line. But it has a few limitations for me:

  • The output format is not condensed (ie, it contains a lot of needless whitespace, which adds up for huge files)
  • There doesn't seem to be an option to suppress null values (again, very inefficient on space)
  • GDAL is an enormous package that does a lot of stuff I don't need (so it's a very heavy dependency for this one tiny job).

Is there any better tool for the job?

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    GeoTools can do it in Java but it is not small either. OpenJUMP has native drivers for both formats but it is probably difficult to run without using the UI. I guess that both will create uncondensed result with nulls. – user30184 Dec 20 '17 at 6:04
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Pyshp reads and writes shapefiles, no other formats, in Python: pip install pyshp.

You can use its Python geo protocol to get GeoJSON-like representations of features and then use Python's json module to serialize them to JSON. See https://docs.python.org/3.6/library/json.html for examples of compact encoding.

Mike Bostock's https://www.npmjs.com/package/shapefile also does command line conversion of shapefiles.

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