ZMI is an abbreviation for Zope Management Interface. This is the user interface rendered when accessing Zope`s management screens using a web browser.

Bootstrap ZMI

Since Zope 4.0b6 the ZMI is styled using Bootstrap. The previously used GIF icons were replaced by font glyphs which are stored in the package zmi.styles (part of Zope) together with the CSS and JavaScript needed by Bootstrap.

The free Font Awesome glyphs are used as icons, see the table of available icons.

Update packages

If you have a Product or package which contains types, which can be added via the ZMI, the default icon will be shown.

To use one of the new icons add an attribute named zmi_icon to the class. As value use a name listed on available icons prefixed by fas fa-. Example to use the info icon (i in a circle):

zmi_icon = 'fas fa-info-circle'

Use custom icons and resources

To use custom icons (which are not part of zmi.styles) or load custom CSS resp. JavaScript, you have to:

  1. create a directory and fill it with your assets
  2. register this directory as resource directory
  3. register a subscription adapter for App.interfaces.ICSSPaths resp. App.interfaces.IJSPaths. This adapter has to return an iterable of paths resp. URLs which should be loaded when rendering the ZMI.

Example taken from zmi.styles:

  • Register the resource directory via ZCML:

        directory="resources" />
  • Create a subscription adapter returning the path to the CSS file (zmi.styles has this code in

    import zope.component
    import zope.interface
    def css_paths(context):
        """Return paths to CSS files needed for the Zope 4 ZMI."""
        return (
  • Register the subscriber via ZCML:

        factory=".subscriber.css_paths" />

Use custom resources via ZMI

To add custom CSS or JavaScript resources via ZMI you have to add a property:

  • zmi_additional_css_paths for additional CSS
  • zmi_additional_js_paths for additional JavaScript

The properties can have one of the following types:

  • string
  • ustring
  • ulines

The value of the property has to be one or more paths/URLs to CSS resp. JavaScript which will be included in the HTML of the ZMI. (Paths have to be resolvable by the browser aka not simple file system paths.)