web-server/doc/en/user/source/community/gsr/installing.rst

Installing the GeoServer GSR extension
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 #. Download the extension from the nightly GeoServer community module builds :download_community:`gsr`.

    .. warning:: Make sure to match the version of the extension to the version of the GeoServer instance!

 #. Extract the contents of the archive into the ``WEB-INF/lib`` directory of the GeoServer installation.