The command line arguments for QtWebDriver can be listed by running the exe with --help

d:\gitx\wdx>WebDriver.exe --help

• config
  The path to config file (e.g. config.json) in JSON format with specified WD parameters as described above (port, root, etc.)
• http-threads
  The number of threads to use for handling HTTP requests (default: 4)
• log-path
  The path to use for the QtWebDriver server log (default: ./webdriver.log)
• port
  The port that QtWebDriver listens on (default: 9517)
• root
  The path of location to serve files from (default: ./web)
• silence
  If enabled, QtWebDriver will not log anything to stdout/stderr (default: false)
• uinput
  If set, user input device will be registered in the system.
  See User-Input-Forwarding.
• url-base
  The URL path prefix to use for all incoming WebDriver REST requests. A prefix and postfix / will be appended automatically if not present
• verbose
  If enabled, QtWebDriver will log lots of stuff to stdout/stderr (default: false)
• version
  Print version information to stdout and exit
• vnc-login
  VNC server IP and port (default: 127.0.0.1:5900).
  See User-Input-Forwarding
• webserver-cfg
  The path to the web server configuration json file, e.g

{
    "listening_ports":"9518",
    "extra_mime_types": ".qml=text/x-qml",
    "num_threads": "9",
}

• whitelist
  Path to the whitelist xml file. See WhiteList
• wi-server
  If true, web inspector will be enabled (default: false)
• wi-port
  Web inspector listening port (default: 9222)