All Octicons
square
Octicon sizes navigation
React
import {SquareIcon} from '@primer/octicons-react' <SquareIcon size={16} />
Rails
<%= render(Primer::Beta::Octicon.new(:square, size: :small)) %>
Jekyll
{% octicon square height:16 %}
Figma
This icon is called square
in Primer's Octicons library.