CLion suggests several ways to view images, embedded in the HTML files. You can use navigation to source, open an image in an external graphical editor, or preview images on-the-fly. The viewing modes are configurable in the Images dialog.
To view an image in CLion
In the Project tool window, select the desired image file.
On the context menu of the file, choose, or press F4.
To view an image in an external editor
In the Project tool window, select an image file.
On the context menu of the file, choose, or press Ctrl+Alt+F4.
To preview an image, place the caret at a reference to an image in the editor, and do one of the following
On the context menu, choose.
Invoke the feature by pressing Ctrl+B.