Working with font icons

Kentico uses a CSS icon font to display graphics in the administration interface. Font icons have better scalability and responsiveness than standard image files, and do not require additional requests when rendering pages.

To view a list of the default font icons in the system, see:

The following files store the system font icons:

  • CMS\App_Themes\Default\Fonts - folder containing the default Core-icons font files
  • CMS\App_Themes\Default\bootstrap.css - administration interface stylesheet including font icon class definitions
  • CMS\App_Themes\Global\skin.css - stylesheet for live sites, includes font icons

The font icon definitions in the stylesheets are generated based on CMS\App_Themes\Default\Bootstrap\icons-core.less.

Assigning and displaying font icons

Font icons serve as visual representations of objects and actions in the Kentico administration interface. To assign a font icon to an object, such as a Page type, Web part, UI element or Page template, edit the object and set the font icon class name.

You can also manually add font icons directly into HTML markup (for live site pages, you need to link the stylesheet that defines the icon font):

<i class="icon-plus" aria-hidden="true"></i>

Adding custom font icons

To extend the default set of available font icons, integrate an additional font into your project:

  1. Prepare the font files that define your icons (.eot, .svg, .ttf, .woff).

  2. Create a stylesheet for your icons, containing the following:

    • Classes that set the content property for individual icons.
    • A general selector that sets the font-family and other required CSS properties for all icons. To use the icons in the Kentico administration interface, add the cms-bootstrap class to the selector.
  3. Place the font files and stylesheet into the project’s CMS\App_Themes\Default\Custom folder (create the Custom folder if necessary).

  4. If you wish to use the icons on the live site, manually link the stylesheet on the given pages (the system automatically links the stylesheet on administration interface pages).

You can now assign the font icon class names to Kentico objects or manually add the icons to your HTML markup.


The following example demonstrates how to generate and add custom font icons using the IcoMoon application:

  1. Create the required icon set in the IcoMoon application.

  2. Download the package (Font -> Download).

  3. Open your project’s CMS\App_Themes\Default folder.

  4. Create a Custom sub-folder.

  5. Copy the font folder (containing .eot, .svg, .ttf, .woff files) and the style.css stylesheet from the IcoMoon package into the Custom folder.

  6. Edit style.css and add the cms-bootstrap class to the general icon selector:

     /* General icon selector with the addition of the cms-bootstrap class */
     .cms-bootstrap [class^="custom-"], .cms-bootstrap [class*="custom-"] {
         font-family: 'icomoon';
         speak: none;
         font-style: normal;
         font-weight: normal;
         font-variant: normal;
         text-transform: none;
         line-height: 1;
     .custom-pencil:before {
         content: "\e600";

You can try out the custom icons by assigning them to an object in Kentico. For example:

  1. Open the Page types application.
  2. Edit a page type.
  3. Enter the class name of one of the custom icons into the Page type icon field.
  4. Create a new page in the Pages application. You can see the icon in the list of page types if the custom icons were added successfully.