aar2slob converts Aard Dictionary .aar files to slob format.

Create Python 3 virtual environment and install slob.py as described at http://github.org/itkach/slob/. In this virtual environment run

pip install git+https://github.com/itkach/aar2slob.git

usage: aar2slob [-h] [-o OUTPUT_FILE] [-c {lzma2,zlib}] [-b BIN_SIZE]
                [-s START] [-e END] [-u URI] [-l LICENSE_NAME]
                [-L LICENSE_URL] [-a CREATED_BY] [-w WORK_DIR]
                input_file [input_file ...]

positional arguments:
  input_file            Name of Aard Dictionary file to read

optional arguments:
  -h, --help            show this help message and exit
  -o OUTPUT_FILE, --output-file OUTPUT_FILE
                        Name of output slob file
  -c {lzma2,zlib}, --compression {lzma2,zlib}
                        Name of compression to use. Default: lzma2
  -b BIN_SIZE, --bin-size BIN_SIZE
                        Minimum storage bin size in kilobytes. Default: 384
  -s START, --start START
                        Start index
  -e END, --end END     End index
  -u URI, --uri URI     Value for uri tag. Slob-specific article URLs such as
                        bookmarks can be migrated to another slob based on
                        matching "uri" tag values
  -l LICENSE_NAME, --license-name LICENSE_NAME
                        Value for license.name tag. This should be name under
                        which the license is commonly known.
  -L LICENSE_URL, --license-url LICENSE_URL
                        Value for license.url tag. This should be a URL for
                        license text
  -a CREATED_BY, --created-by CREATED_BY
                        Value for created.by tag. Identifier (e.g. name or
                        email) for slob file creator
  -w WORK_DIR, --work-dir WORK_DIR
                        Directory for temporary files created during
                        compilation. Default: .

For example, to convert wordnet-3.0-1.html.aar:

aar2slob wordnet-3.0-1.html.aar