you can define your own Apache mod_log_config style logline formats, e.g.
'custom' => '%h %l %u %t \"%r\" %>s %b %{X-Forwarded-For}'
Usage: webforensik [-i input_type] [-o output_type]
[-h] input_logfile [output_file]
-i allowed input types: common combined combinedio cookie vhost
-o allowed output types: csv html xml
-h resolve hostnames