Customize Menus

To customize menus in Fiddler, add rules using FiddlerScript with Global scope. For example:

Add context-menu item to open currently selected URLs using Firefox

    public static ContextAction("Open in Firefox")
    function DoOpenInIE(oSessions: Fiddler.Session[]){ 
      if (null == oSessions){
        MessageBox.Show("Please choose at least 1 session."); return;
      }

      for (var x = 0; x < oSessions.Length; x++){
        System.Diagnostics.Process.Start("firefox.exe", oSessions[x].url);
      }
    }

Add a submenu to the Rules menu and create an option in it

    public static RulesOption("Non-Exclusive-Test", "User-Agent") 
    var m_UANONRad: boolean = true; 

To build submenus with mutually exclusive radio options

    public static RulesOption("Spoof Netscape &3.0", "User-Agent", true) 
    var m_NS3: boolean = false; 

    public static RulesOption("Spoof IE &6.0", "User-Agent", true) 
    var m_IE6: boolean = false; 

    public static RulesOption("Spoof nothing", "User-Agent", true) 
    var m_UANONE: boolean = true;

To build a submenu with mutually exclusive radio options, that control a single string variable (Offers a more compact syntax than the previous alternative)

    RulesString("&SubMenuName", true) 
    RulesStringValue(0,"Option1Name", "Option1Value")
    RulesStringValue(1,"Option2Name", "Option2Value")
    RulesStringValue(2,"&Custom...", "%CUSTOM%")
    public static var sTheOptionValue: String = null;

Same as previous, but with a default option pre-selected

    RulesString("&SubMenuName", true) 
    RulesStringValue(0,"Option1Name", "Option1Value")
    RulesStringValue(1,"Option2NameDEFAULT", "DefaultVal", true)
    RulesStringValue(2,"&Custom...", "%CUSTOM%")
    public static var sTheOptionValue: String = null;

Add a Tools menu option that resets the script

    // Force a manual reload of the script file. Resets all
    // RulesOption variables to their defaults.
    public static ToolsAction("Reset Script")
    function DoManualReload(){ 
        FiddlerObject.ReloadScript();
    }

Add a Tools menu option that clears all WinINET/IE cookies and cache files

    public static ToolsAction("Reset IE"){
      FiddlerObject.UI.actClearWinINETCache();
      FiddlerObject.UI.actClearWinINETCookies(); 
    }