Hi,
to keep a webbrowser instance from downloading images you will have to implement a host control with an IDispatch interface. The method Invoke() must
handle the event id DISPID_AMBIENT_DLCONTROL. This event id is sent from the WB control to the host to request the download options, once at startup and always when informed of changes.
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You sure could cut corners by downloading the
EmbeddedWebBrowser component, which has all this and more accessible in your object inspector.
Have fun.